If module option "cal" is set to 1, the ~22 sec rf tracking filter calibration
sequence will be invoked on startup.  Otherwise, the calibration will take
place during the first tune.
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>