src/nb: Fix non-local header treated as local

Change-Id: I8174d7b40008cfe4fba10fde4670682aac0ad078
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/27131
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
7 files changed