[media] gspca - zc3xx: Lack of register 08 value for sensor cs2102k

The line defining the value of the register 08 for the sensor cs2102k was
commented by error in commit 30c73d46

.

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