V4L/DVB (6746): saa7134-dvb: fix tuning for WinTV HVR-1110

There are several months my hvr1110 stop working.
This is very simple to fix, for my card revision at least, by setting a
missing field to the hauppauge_hvr_1110_config.

Signed-off-by: Benoit Istin <beistin@gmail.com>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>