[media] au0828: set reg->size

The size field wasn't filled in.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/usb/au0828/au0828-video.c

@@ -1759,6 +1759,7 @@ static int vidioc_g_register(struct file *file, void *priv,
 	struct au0828_dev *dev = fh->dev;
 
 	reg->val = au0828_read(dev, reg->reg);
+	reg->size = 1;
 	return 0;
 }