[media] r820t: Allow disabling IMR callibration
The rtl-sdr library disabled IMR callibration. While I'm not sure yet why, it could be a good idea to add a modprobe parameter here, to allow to also disable it. There are two rationale behind it: - It helps to compare USB dumps between rtl-sdr and the Kernel module; - If rtl-sdr disabled it, perhaps there's a good reason (e. g. it might not be actually working, or it might be causing some trouble). For both cases, it seems useful to add a modprobe parameter to allow testing the device with both configurations. Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com> Tested-by: NAntti Palosaari <crope@iki.fi>
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