media: usb: make video_device const

Make these const as they are only used during a copy operation.

Signed-off-by: Bhumika Goyal <bhumirks@gmail.com>
Acked-by: Mike Isely <isely@pobox.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

drivers/media/usb/go7007/go7007-v4l2.c

@@ -901,7 +901,7 @@ static const struct v4l2_ioctl_ops video_ioctl_ops = {
 	.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
 };
 
-static struct video_device go7007_template = {
+static const struct video_device go7007_template = {
 	.name		= "go7007",
 	.fops		= &go7007_fops,
 	.release	= video_device_release_empty,