doc: mkimage: Regularize option documentation

Square brackets are commonly used to denote optional parts of a command.
However, all option arguments are mandatory. Remove these brackets. This
also removes some unnecessary quotation marks, and uses hyphens to connect
words in option arguments. This is intended to just clean up the
formatting, leaving content corrections to later patches.

Signed-off-by: Sean Anderson <seanga2@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

doc/mkimage.1

@@ -26,7 +26,7 @@ mkimage \- Generate image for U-Boot
 .BI \-F\~ image-file-name
 .YS
 .
-.SH "DESCRIPTION"
+.SH DESCRIPTION
 The
 .B mkimage
 command is used to create images for use with the U-Boot boot loader.
@@ -50,64 +50,64 @@ allows for more flexibility in handling images of various types and also
 enhances integrity protection of images with stronger checksums. It also
 supports verified boot.
 .
-.SH "OPTIONS"
+.SH OPTIONS
 .
 .B List image information:
 .
 .TP
-.BI "\-l [" "uimage file name" "]"
+.BI \-l " uimage-file-name"
 mkimage lists the information contained in the header of an existing U-Boot image.
 .
 .TP
-.BI "\-T [" "image type" "]"
+.BI \-T " image-type"
 Parse image file as type.
 Pass \-h as the image to see the list of supported image type.
 Without this option image type is autodetected.
 .
 .TP
-.BI "\-q"
+.B \-q
 Quiet. Don't print the image header on successful verification.
 .
 .P
 .B Create old legacy image:
 .
 .TP
-.BI "\-A [" "architecture" "]"
+.BI \-A " architecture"
 Set architecture. Pass \-h as the architecture to see the list of supported architectures.
 .
 .TP
-.BI "\-O [" "os" "]"
+.BI \-O " os"
 Set operating system. bootm command of u-boot changes boot method by os type.
 Pass \-h as the OS to see the list of supported OS.
 .
 .TP
-.BI "\-T [" "image type" "]"
+.BI \-T " image-type"
 Set image type.
 Pass \-h as the image to see the list of supported image type.
 .
 .TP
-.BI "\-C [" "compression type" "]"
+.BI \-C " compression-type"
 Set compression type.
 Pass \-h as the compression to see the list of supported compression type.
 .
 .TP
-.BI "\-a [" "load address" "]"
+.BI \-a " load-address"
 Set load address with a hex number.
 .
 .TP
-.BI "\-e [" "entry point" "]"
+.BI \-e " entry-point"
 Set entry point with a hex number.
 .
 .TP
-.BI "\-l"
+.B \-l
 List the contents of an image.
 .
 .TP
-.BI "\-n [" "image name" "]"
+.BI \-n " image-name"
 Set image name to 'image name'.
 .
 .TP
-.BI "\-R [" "secondary image name" "]"
+.BI \-R " secondary-image-name"
 Some image types support a second image for additional data. For these types,
 use \-R to specify this second image.
 .TS
@@ -136,42 +136,42 @@ T}
 .TE
 .
 .TP
-.BI "\-d [" "image data file" "]"
+.BI \-d " image-data-file"
 Use image data from 'image data file'.
 .
 .TP
-.BI "\-x"
+.B \-x
 Set XIP (execute in place) flag.
 .
 .TP
-.BI "\-s"
+.B \-s
 Don't copy in the image data. Depending on the image type, this may create
 just the header, everything but the image data, or nothing at all.
 .
 .TP
-.BI "\-v"
+.B \-v
 Verbose. Print file names as they are added to the image.
 .
 .P
 .B Create FIT image:
 .
 .TP
-.BI "\-b [" "device tree file" "]
+.BI \-b " device-tree-file"
 Appends the device tree binary file (.dtb) to the FIT.
 .
 .TP
-.BI "\-c [" "comment" "]"
+.BI \-c " comment"
 Specifies a comment to be added when signing. This is typically a useful
 message which describes how the image was signed or some other useful
 information.
 .
 .TP
-.BI "\-D [" "dtc options" "]"
+.BI \-D " dtc-options"
 Provide special options to the device tree compiler that is used to
 create the image.
 .
 .TP
-.BI "\-E
+.BI \-E
 After processing, move the image data outside the FIT and store a data offset
 in the FIT. Images will be placed one after the other immediately after the
 FIT, with each one aligned to a 4-byte boundary. The existing 'data' property
@@ -180,12 +180,12 @@ A 'data-offset' of 0 indicates that it starts in the first (4-byte aligned)
 byte after the FIT.
 .
 .TP
-.BI "\-B [" "alignment" "]"
+.BI \-B " alignment"
 The alignment, in hexadecimal, that external data will be aligned to. This
 option only has an effect when \-E is specified.
 .
 .TP
-.BI "\-f [" "image tree source file" " | " "auto" "]"
+.BI \-f " image-tree-source-file"
 Image tree source file that describes the structure and contents of the
 FIT image.
 .IP
@@ -195,29 +195,29 @@ and -e are used to specify the image to include in the FIT and its attributes.
 No .its file is required.
 .
 .TP
-.BI "\-F"
+.B \-F
 Indicates that an existing FIT image should be modified. No dtc
 compilation is performed and the \-f flag should not be given.
 This can be used to sign images with additional keys after initial image
 creation.
 .
 .TP
-.BI "\-i [" "ramdisk_file" "]"
+.BI \-i " ramdisk-file"
 Appends the ramdisk file to the FIT.
 .
 .TP
-.BI "\-k [" "key_directory" "]"
+.BI \-k " key-directory"
 Specifies the directory containing keys to use for signing. This directory
 should contain a private key file <name>.key for use with signing and a
 certificate <name>.crt (containing the public key) for use with verification.
 .
 .TP
-.BI "\-G [" "key_file" "]"
+.BI \-G " key-file"
 Specifies the private key file to use when signing. This option may be used
 instead of \-k.
 .
 .TP
-.BI "\-K [" "key_destination" "]"
+.BI \-K " key-destination"
 Specifies a compiled device tree binary file (typically .dtb) to write
 public key information into. When a private key is used to sign an image,
 the corresponding public key is written into this file for for run-time
@@ -225,42 +225,42 @@ verification. Typically the file here is the device tree binary used by
 CONFIG_OF_CONTROL in U-Boot.
 .
 .TP
-.BI "\-G [" "key_file" "]"
+.BI \-G " key-file"
 Specifies the private key file to use when signing. This option may be used
 instead of \-k.
 .
 .TP
-.BI "\-g [" "key_name_hint" "]"
+.BI \-g " key-name-hint"
 Sets the key-name-hint property when used with \-f auto. This is the <name>
 part of the key. The directory part is set by \-k. This option also indicates
 that the images included in the FIT should be signed. If this option is
 specified, \-o must be specified as well.
 .
 .TP
-.BI "\-o [" "signing algorithm" "]"
+.BI \-o " signing-algorithm"
 Specifies the algorithm to be used for signing a FIT image. The default is
 taken from the signature node's 'algo' property.
 .
 .TP
-.BI "\-p [" "external position" "]"
+.BI \-p " external-position"
 Place external data at a static external position. See \-E. Instead of writing
 a 'data-offset' property defining the offset from the end of the FIT, \-p will
 use 'data-position' as the absolute position from the base of the FIT.
 .
 .TP
-.BI "\-r"
+.B \-r
 Specifies that keys used to sign the FIT are required. This means that they
 must be verified for the image to boot. Without this option, the verification
 will be optional (useful for testing but not for release).
 .
 .TP
-.BI "\-N [" "engine" "]"
+.BI \-N " engine"
 The openssl engine to use when signing and verifying the image. For a complete list of
 available engines, refer to
 .BR engine (1).
 .
 .TP
-.BI "\-t
+.B \-t
 Update the timestamp in the FIT.
 .IP
 Normally the FIT timestamp is created the first time mkimage is run on a FIT,