V4L/DVB: uvcvideo: Cache control min, max, res and def query results

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/video/uvc/uvcvideo.h b/drivers/media/video/uvc/uvcvideo.h
index 0c7966f..2bba059 100644
--- a/drivers/media/video/uvc/uvcvideo.h
+++ b/drivers/media/video/uvc/uvcvideo.h
@@ -245,7 +245,8 @@
 			   uvc_control_info. */
 	__u8 dirty : 1,
 	     loaded : 1,
-	     modified : 1;
+	     modified : 1,
+	     cached : 1;
 
 	__u8 *data;
 };