U-Boot: Remove old paths and add checkpatch check to U-Boot commits

This creates a new check called _run_checkpatch_no_tree that will
run checkpatch with the --no-tree option.  This option is required
for U-Boot because U-Boot doesn't match the kernel tree.

TEST=Upload new patch for U-Boot with checkpatch violations.
Observe that the upload failed due to violations.

Change-Id: I8a46641fb956bc6cb14fbbf528a7487258ec5afe
Reviewed-on: http://gerrit.chromium.org/gerrit/6403
Tested-by: Anton Staaf <robotboy@chromium.org>
Reviewed-by: Vadim Bendebury <vbendeb@chromium.org>
1 file changed