using grep is an extra process invocation, but it's not a bashism.
Also match precisely, so AGCC doesn't trigger on GCC (we don't have collisions
right now, but we won't have to deal with them in the future)
Change-Id: I242833c350b7f1e6a6793f288c1aae0b50d57a26
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Reviewed-on: http://review.coreboot.org/10518
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
f2c15f5136