V4L/DVB (5139): M920x: Fix tuner identification bug with qt1010 module

Fixes qt1010 identification bug with megasky caused by
the Quantek QT1010 tuner module patch.

Signed-off-by: Aapo Tahkola <aet@rasterburn.org>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>