Consistent with real build process, it retains more potential to detect the build environment. Signed-off-by: Bill XIE <persmule@hardenedlinux.org> Change-Id: I46f2fe04bf1b8c1ca6476f05555114fa1ef2a96e Reviewed-on: https://review.coreboot.org/c/coreboot/+/65728 Reviewed-by: Elyes Haouas <ehaouas@noos.fr> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>