V4L/DVB (10389): gspca - zc3xx: Do work the sensor adcm2700.

The lack of the green color is fixed by sensor sequences closer to the
ms-win traces.

Signed-off-by: Jean-Francois Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>