V4L/DVB (4649): Merged VP702x support to dvb-usb multi input

The fixed support for the VP70x (supports only StarBox2) is now in sync with
latest changes in the dvb-usb framework.

Signed-off-by: Patrick Boettcher <pb@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>