add checks for depthcharge and coreboot

Vendors start making contributions to Depthcharge, so the
Signed-off-by: clause will be useful.

Coreboot patches were not being checked at all until this change, it
has been decided to follow the kernel style for now, ignoring certain
violations, more exceptions could be added later as required.

BUG=None
TEST=attempts to upload coreboot patch with lines longer than 80
    columns fail now.

Change-Id: I7015be45961212b00facde7e015db02339d5c452
Reviewed-on: https://chromium-review.googlesource.com/211431
Tested-by: Vadim Bendebury <vbendeb@chromium.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Commit-Queue: Vadim Bendebury <vbendeb@chromium.org>
Reviewed-by: David James <davidjames@chromium.org>
1 file changed