V4L/DVB (7056): tuner: suppress obsolete tuner i2c address warning for XC5000 tuners

We already know that the XC5000 tuner can only be located at
i2c address 0x61, 0x62, 0x63 or 0x64

We shouldn't display this warning if the XC5000 tuner is present.

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