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/em28xx/em28xx-video.c b/drivers/media/video/em28xx/em28xx-video.c
index 2d9f14d..838e7ec 100644
--- a/drivers/media/video/em28xx/em28xx-video.c
+++ b/drivers/media/video/em28xx/em28xx-video.c
@@ -1892,7 +1892,7 @@
 		return NULL;
 	*vfd = *template;
 	vfd->minor   = -1;
-	vfd->dev = &dev->udev->dev;
+	vfd->parent = &dev->udev->dev;
 	vfd->release = video_device_release;
 	vfd->type = type;
 	vfd->debug = video_debug;