drivers/leds/leds-ot200.c: fix error caused by shifted mask

drivers/leds/leds-ot200.c: fix error caused by shifted mask

During the development of this driver an in-house register documentation
was used.  The last week some integration tests were done and this problem
was found.  It turned out that the released register documentation is
wrong.

The fix is very simple: shift all masks by one.

Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Cc: Bryan Wu <cooloney@gmail.com>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>