This check had very few false positives which were all easily resolved,
and it's unlikely that further false positives will become problematic
in the future. On the other hand, it does detect a very severe bug (when
you think you're using a Kconfig but you aren't due to a typo), so since
warnings are currently not very visible, let's turn this into an error
because the pros clearly outweigh the cons for that.
Change-Id: I897b5e13d3242fb77b69f0bd3585baa7476aa726
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/32257
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
