vendorcode/amd/pi/00670F00: Halt build if headers aren't wrapped

Make sure that AGESA headers don't get pulled directly into coreboot
files again.

BUG=b:66818758
TEST=Build gardenia; Build & boot kahlee; Include AGESA.h into files
verify that the build fails.

Change-Id: I8d6d94872ebf76a9df2850ed0452cf6b1a446ffd
Signed-off-by: Martin Roth <martinroth@google.com>
Reviewed-on: https://review.coreboot.org/22500
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
26 files changed