Add the driver to support User LEDs on PXI Embedded Controller.
Signed-off-by: NHui Chun Ong <hui.chun.ong@ni.com>
Signed-off-by: NBrad Mouring <brad.mouring@ni.com>
Acked-by: NMika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: NJacek Anaszewski <j.anaszewski@samsung.com>