Do not require BRANCH= in coreboot and u-boot path descriptions

The firmware development paradigm changed such that firmware branches
are cut later in the cycle and very little ToT patches need to be
cherry-picked into branches. Let's not require the BRANCH= field in
u-boot/coreboot patch descriptions.

BUG=None
TEST='repo upload' of coreboot patches does not fail any more even if
     BRANCH= is not present in the patch description.

Change-Id: I64d2a7ced488166c271602395e7324d85676a8b8
Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/196257
Reviewed-by: Randall Spangler <rspangler@chromium.org>
Reviewed-by: Stefan Reinauer <reinauer@chromium.org>
1 file changed