ANDROID: Snapshot Mainline's version of checkpatch.pl

Nothing fancy here.  Keeping full history is not required.

  `git checkout mainline/master -- scripts/checkpatch.pl`

This may need to be done periodically.

Bug: 316492624
Signed-off-by: Lee Jones <joneslee@google.com>
Change-Id: I4c90b50197ca7277c59e96bf332ecf795c4f3d12