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/pwc/pwc-if.c b/drivers/media/video/pwc/pwc-if.c
index 423fa7c..b4de821 100644
--- a/drivers/media/video/pwc/pwc-if.c
+++ b/drivers/media/video/pwc/pwc-if.c
@@ -1767,7 +1767,7 @@
 		return -ENOMEM;
 	}
 	memcpy(pdev->vdev, &pwc_template, sizeof(pwc_template));
-	pdev->vdev->dev = &(udev->dev);
+	pdev->vdev->parent = &(udev->dev);
 	strcpy(pdev->vdev->name, name);
 	pdev->vdev->owner = THIS_MODULE;
 	video_set_drvdata(pdev->vdev, pdev);