Support for single ITE 9135 device.

Only single devices have been tested.  Dual ITE 9135 devices
should work, but have not been tested.

TODOs
support for ver 2 chip
config for other tuner types.
rework of firmware file.
Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>