[mpeg2] Porting to v4l 2

[Andrew de Quincey <adq_dvb@lidskialf.net>]

Hi, does anyone object if I port the kfir driver to the v4l 2 API... 
My current plans are:

* Split up kfir.c into several files to ease maintenance (along the
lines of the DVB drivers).

* Support both v4l 1 and v4l 2, configurable at compile time.

* Support on-the-fly configuration in v4l 2 (possibly v4l 1 if I have
the time)

Reason: I need to have the driver running in the same machines as the
dvb-kernel DVB driver which is v4l2... 

-- 
Andrew de Quincey <adq_dvb@lidskialf.net>