Support for IT1935 9006 devices.

9006 have version 2 type chip.

9006 devices should use dvb-usb-it9135-02.fw firmware.

On the device tested the tuner id was set to 0 which meant
the driver used tuner id 0x38. The device functioned normally.
Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>