Automatically fall back to using regular grep if working outside a git
repository and the option to use regular grep is not specified
Signed-off-by: Solomon Alan-Dei <alandei.solomon@gmail.com>
Change-Id: I0cdecf01a0e74c30947c4fe7e7c7d9457a5165a1
Reviewed-on: https://review.coreboot.org/c/coreboot/+/66637
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin L Roth <gaumless@gmail.com>