[media] s5p-fimc: Enable interworking without subdev s_stream

Prevent VIDIOC_STREAMON failing when s_stream callback is
not implemented by a sensor subdev driver.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/video/s5p-fimc/fimc-capture.c

@@ -191,7 +191,8 @@ static int fimc_stop_capture(struct fimc_dev *fimc)
 			   FIMC_SHUTDOWN_TIMEOUT);
 
 	ret = v4l2_subdev_call(cap->sd, video, s_stream, 0);
-	if (ret)
+
+	if (ret && ret != -ENOIOCTLCMD)
 		v4l2_err(&fimc->vid_cap.v4l2_dev, "s_stream(0) failed\n");
 
 	spin_lock_irqsave(&fimc->slock, flags);