V4L/DVB (9869): gspca - zc3xx: Change the USB exchanges for the sensor pas202b.

This sensor was declared as hdcs2020.
The new exchanges have been extracted from the ms-win file usbvm31b.inf.
The light frequency control has been added.
Signed-off-by: NJean-Francois Moine <moinejf@free.fr>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>