Remove the memeber *config from the isc_subdev_entity struct,
the member is useless afterward.
Signed-off-by: NWenyou Yang <wenyou.yang@microchip.com>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@osg.samsung.com>