This fixes the warning that is seen on the jenkins server: Insecure dependency in piped open while running setgid at util/lint/checkpatch.pl line 958. Change-Id: I476efa76ef6a275584a47ec0ecf2315948d53e9d Signed-off-by: Martin Roth <martinroth@google.com> Reviewed-on: https://review.coreboot.org/23473 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>