V4L/DVB (8428): videodev: rename 'dev' to 'parent'

The field 'dev' is not the video device, but the parent of the video device.
Rename accordingly.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
diff --git a/drivers/media/video/ov511.c b/drivers/media/video/ov511.c
index eafb0c7..b72e566 100644
--- a/drivers/media/video/ov511.c
+++ b/drivers/media/video/ov511.c
@@ -5833,7 +5833,7 @@
 		goto error;
 
 	memcpy(ov->vdev, &vdev_template, sizeof(*ov->vdev));
-	ov->vdev->dev = &intf->dev;
+	ov->vdev->parent = &intf->dev;
 	video_set_drvdata(ov->vdev, ov);
 
 	for (i = 0; i < OV511_MAX_UNIT_VIDEO; i++) {