commit a40cf3f3 upstream.

Add device id for Marvell 88se91a2
Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>