Copy the devicetree source for the A10 SoC and all existing boards
verbatim from the Linux v5.18-rc1 tag.
This commit also adds the following new board devicetree:
- sun4i-a10-topwise-a721.dts
While this update should not impact any existing U-Boot functionality,
the changes to the USB PHY detection GPIO properties are needed to
convert that driver to use the DM GPIO framework.
Signed-off-by: Samuel Holland <samuel@sholland.org>
