[media] uvc gadget: switch to unlocked_ioctl

Instead of .ioctl use unlocked_ioctl. This allows us to finally remove
the old .ioctl op.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

drivers/usb/gadget/function/uvc_v4l2.c

@@ -357,7 +357,7 @@ struct v4l2_file_operations uvc_v4l2_fops = {
 	.owner		= THIS_MODULE,
 	.open		= uvc_v4l2_open,
 	.release	= uvc_v4l2_release,
-	.ioctl		= video_ioctl2,
+	.unlocked_ioctl	= video_ioctl2,
 	.mmap		= uvc_v4l2_mmap,
 	.poll		= uvc_v4l2_poll,
 #ifndef CONFIG_MMU