[media] V4L: sh_mobile_ceu_camera: use default .get_parm() and .set_parm() operations

No need to duplicate default .get_parm() and .set_parm() operations.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>