[media] pvrusb2: replace .ioctl by .unlocked_ioctl

As far as I can tell pvrusb2 does its own locking, so there is
no need to use .ioctl.

Signed-off-by: Hans Verkuil <[e-mail]>
Signed-off-by: Mauro Carvalho Chehab <[e-mail]>

drivers/media/usb/pvrusb2/pvrusb2-v4l2.c

···
 	.open       = pvr2_v4l2_open,
 	.release    = pvr2_v4l2_release,
 	.read       = pvr2_v4l2_read,
-	.ioctl      = pvr2_v4l2_ioctl,
+	.unlocked_ioctl = pvr2_v4l2_ioctl,
 	.poll       = pvr2_v4l2_poll,
 };