V4L/DVB (13917): gspca - zc3xx: Cleanup code.

- update copyright and module author
- change __u8/16 to u8/16
- set unsigned the sd sensor
- initialize the controls by macros
Signed-off-by: Jean-Francois Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>