During development of the checkstyle.py script, it can be useful to run
only a subset of the checker. Add the ability to do so with a
'--checkers' command line argument.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>