Add const to rfkill_ops structure as it is only passed as an argument
to the functions rfkill_alloc. This argument is of type const,
so annotate the structure with const.
Signed-off-by: NBhumika Goyal <bhumirks@gmail.com>
Signed-off-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com>