Help prevent additional files coming in to the tree with the old
license header.
Change-Id: Idbafc2d8c05f87075083293d27900304c53e13dc
Signed-off-by: Martin Roth <martinroth@google.com>
Reviewed-on: https://review.coreboot.org/12920
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>