- fixes tv tuner audio problem on cx88 based cards (like Leadtek WinFast
PVR2000) - patch prepared against our 2.6.17 but should be easily ported
to 2.6.1{4,6,8} - important thing: we should cx_clear not cx_set the
certain register (see the patch) for our card to have tv audio.
This patch clears the register by default, in later kernels there is
switch with cards ids - if you have no tv sound add your card id
for the cx_clear option.