iwlwifi: mvm: add const to thermal_cooling_device_ops structure

Declare thermal_cooling_device_ops structure as const as it is only passed
as an argument to the function thermal_cooling_device_register and this
argument is of type const. So, declare the structure as const.
Signed-off-by: Bhumika Goyal <bhumirks@gmail.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>

drivers/net/wireless/intel/iwlwifi/mvm/tt.c

@@ -813,7 +813,7 @@ static int iwl_mvm_tcool_set_cur_state(struct thermal_cooling_device *cdev,
 	return ret;
 }
 
-static struct thermal_cooling_device_ops tcooling_ops = {
+static const struct thermal_cooling_device_ops tcooling_ops = {
 	.get_max_state = iwl_mvm_tcool_get_max_state,
 	.get_cur_state = iwl_mvm_tcool_get_cur_state,
 	.set_cur_state = iwl_mvm_tcool_set_cur_state,