Reinstate BRANCH= checks for coreboot and depthcharge

There are many branches in flight now, and many changes need to be
ported to certain branches. Let's enforce the BRANCH= clause in
firmware patch descriptions.

BUG=none
TEST=tried uploading a depthcharege patch without a BRACNH= clause,
     got a presubmit error.

Change-Id: If4403c8f705e5a855ab1aee5e0d8db9a1ca2f751
Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/221786
Reviewed-by: Daisuke Nojiri <dnojiri@chromium.org>
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
1 file changed