V4L/DVB (7072): sets the MT2060 IF1 frequency according to EEPROM

Here is a patch for Hauppage Nova-T-Stick and Nova-T-500 users.  It
sets the MT2060 IF1 frequency according to the calibration values
stored in the EEPROM.

It is supposed to enhance the signal quality, but, hey, there is no
guarantee.  Feedbacks would be much appreciated, to know whether it
deserves being applied.

Signed-off-by: Olivier DANET <odanet at caramail.com>
Signed-off-by: Patrick Boettcher <pb@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>