media: zr364xx: constify videobuf_queue_ops structures

These videobuf_queue_ops structures are only passed as the second
argument to videobuf_queue_vmalloc_init, which is declared as const.
Thus the videobuf_queue_ops structures themselves can be const.

Done with the help of Coccinelle.

// <smpl>
@r disable optional_qualifier@
identifier i;
position p;
@@
static struct videobuf_queue_ops i@p = { ... };

@ok1@
identifier r.i;
expression e1;
position p;
@@
videobuf_queue_vmalloc_init(e1,&i@p,...)

@bad@
position p != {r.p,ok1.p};
identifier r.i;
struct videobuf_queue_ops e;
@@
e@i@p

@depends on !bad disable optional_qualifier@
identifier r.i;
@@
static
+const
 struct videobuf_queue_ops i = { ... };
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

drivers/media/usb/zr364xx/zr364xx.c

@@ -439,7 +439,7 @@ static void buffer_release(struct videobuf_queue *vq,
 	free_buffer(vq, buf);
 }
 
-static struct videobuf_queue_ops zr364xx_video_qops = {
+static const struct videobuf_queue_ops zr364xx_video_qops = {
 	.buf_setup = buffer_setup,
 	.buf_prepare = buffer_prepare,
 	.buf_queue = buffer_queue,