V4L/DVB (6252): Adapt drivers to use the newer videobuf modules

PCI-dependent videobuf_foo methods were renamed as videobuf_pci_foo.

Also, videobuf_dmabuf is now part of videobuf-dma-sg private struct.
So, to access it, a subroutine call is needed.

This patch renames all occurences of those function calls to be
consistent with the video-buf split.

Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
http://thread.gmane.org/gmane.comp.video.video4linux/34978/focus=34981
Reviewed-by: Ricardo Cerqueira <v4l@cerqueira.org>
diff --git a/Documentation/dvb/faq.txt b/Documentation/dvb/faq.txt
index dbcedf5..2511a33 100644
--- a/Documentation/dvb/faq.txt
+++ b/Documentation/dvb/faq.txt
@@ -150,7 +150,7 @@
 	- saa7146_vv: SAA7146 video and vbi functions. These are only needed
 	  for full-featured cards.
 
-	- video-buf: capture helper module for the saa7146_vv driver. This
+	- videobuf-dma-sg: capture helper module for the saa7146_vv driver. This
 	  one is responsible to handle capture buffers.
 
 	- dvb-ttpci: The main driver for AV7110 based, full-featured