[media] v4l: Casting (void *) value returned by kmalloc is useless

The semantic patch that makes this change is available
in scripts/coccinelle/api/alloc/drop_kmalloc_cast.cocci.

Signed-off-by: Thomas Meyer <[e-mail]>
Signed-off-by: Mauro Carvalho Chehab <[e-mail]>

drivers/media/video/vino.c

···
 		size, count);
 
 	/* allocate memory for table with virtual (page) addresses */
-	fb->desc_table.virtual = (unsigned long *)
+	fb->desc_table.virtual =
 		kmalloc(count * sizeof(unsigned long), GFP_KERNEL);
 	if (!fb->desc_table.virtual)
 		return -ENOMEM;