Input: ati_remote2 - check module params

Validate that the values of the module parameters are within the
supported range. Also print the values in hex since that seems like
a better match for bitmasks than decimal.

Signed-off-by: Ville Syrjala <syrjala@sci.fi>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>