V4L/DVB (6292): videobuf_core init always require callback implementation

In the past, videobuf_queue_init were used to initialize PCI DMA videobuffers.
This patch renames it, to avoid confusion with the previous kernel API, doing:
	s/videobuf_queue_init/void videobuf_queue_core_init/

Also, the operations is now part of the function parameter. The function will
also add a test if this is defined, otherwise producing BUG.

Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
diff --git a/drivers/media/video/videobuf-vmalloc.c b/drivers/media/video/videobuf-vmalloc.c
index c9d6ae0..2e3689a 100644
--- a/drivers/media/video/videobuf-vmalloc.c
+++ b/drivers/media/video/videobuf-vmalloc.c
@@ -333,8 +333,8 @@
 			 unsigned int msize,
 			 void *priv)
 {
-	videobuf_queue_init(q, ops, dev, irqlock, type, field, msize, priv);
-	q->int_ops=&qops;
+	videobuf_queue_core_init(q, ops, dev, irqlock, type, field, msize,
+				 priv, &qops);
 }
 
 EXPORT_SYMBOL_GPL(videobuf_queue_vmalloc_init);