This reverts commit 0797f7f0b7e1d7853e2842ddc235ffef139fa792.
Tegra specific solution is not required any more as efi core has been
made aware of ram_top with the following commit:
7b78d6438a efi_loader: Reserve unaccessible memory
Signed-off-by: Mian Yousaf Kaukab <ykaukab@suse.de>