V4L/DVB (8780): v4l: replace the last uses of video_exclusive_open/release

Handle the video_exclusive_open/release functionality inside the
driver.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/video/meye.h b/drivers/media/video/meye.h
index d535748..5f70a10 100644
--- a/drivers/media/video/meye.h
+++ b/drivers/media/video/meye.h
@@ -311,6 +311,7 @@
 	struct video_device *video_dev;	/* video device parameters */
 	struct video_picture picture;	/* video picture parameters */
 	struct meye_params params;	/* additional parameters */
+	unsigned long in_use;		/* set to 1 if the device is in use */
 #ifdef CONFIG_PM
 	u8 pm_mchip_mode;		/* old mchip mode */
 #endif