Add an utility similar to inteltool, which dumps useful information
for porting a board to coreboot.
TEST=Use amdtool on Gigabyte MZ33-AR1 with vendor BIOS and coreboot.
Change-Id: I34405897d0f5670038e7923f3680a28090d92821
Signed-off-by: Michał Żygowski <michal.zygowski@3mdeb.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/89492
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Michał Kopeć <michal.kopec@3mdeb.com>
