VG12 shows minor revision version of 2 which is not handled in
bios_parser_get_firmware_info() routine.
Acked-by: NChristian König <christian.koenig@amd.com>
Signed-off-by: NJerry (Fangzhi) Zuo <Jerry.Zuo@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>