[media] rtl28xxu: add module parameter to disable IR

Disable IR interrupts in order to avoid SDR sample loss.
IR interrupts causes some extra load for device and it seems
be one reason to loss samples when sampling rate is high.

Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>