This is one more interface fix for the video-buf.c module, the first
attempt on that wasn't that clever.  Instead of passing the driver private
data through all function calls I've just made that an element of the
videobuf_queue struct which is passed around everythere _anyway_.

That removes some reduncancy, should be less error prone and gain me some
points on rusty's interface design scala ;)

It also fixes the tvtime crashes which where caused by overviewing one
place to fixup in the first attempt.
Signed-off-by: Gerd Knorr <kraxel@bytesex.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>