[media] mxb/saa7146: first round of cleanups

Convert to the control framework, fix the easy v4l2-compliance failures.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/include/media/saa7146_vv.h b/include/media/saa7146_vv.h
index 4aeff96..b4761ed 100644
--- a/include/media/saa7146_vv.h
+++ b/include/media/saa7146_vv.h
@@ -206,6 +206,7 @@
 int saa7146_start_preview(struct saa7146_fh *fh);
 int saa7146_stop_preview(struct saa7146_fh *fh);
 long saa7146_video_do_ioctl(struct file *file, unsigned int cmd, void *arg);
+int saa7146_s_ctrl(struct v4l2_ctrl *ctrl);
 
 /* from saa7146_vbi.c */
 extern struct saa7146_use_ops saa7146_vbi_uops;