thermal: of: Set THERMAL_TRIP_FLAG_RW_TEMP directly

It is now possible to flag trip points with THERMAL_TRIP_FLAG_RW_TEMP
to allow their temperature to be set from user space via sysfs instead
of using a nonzero writable trips mask during thermal zone registration,
so make the OF thermal code do that.

No intentional functional impact.

Note that this change is requisite for dropping the mask argument from
thermal_zone_device_register_with_trips() going forward.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Daniel Lezcano <daniel.lezcano@linaro.org>

Author: rafaeljw

drivers/thermal/thermal_of.c

@@ -117,6 +117,8 @@ static int thermal_of_populate_trip(struct device_node *np,
 		return ret;
 	}
 
+	trip->flags = THERMAL_TRIP_FLAG_RW_TEMP;
+
 	return 0;
 }
 
@@ -472,7 +474,7 @@ static struct thermal_zone_device *thermal_of_zone_register(struct device_node *
 	struct device_node *np;
 	const char *action;
 	int delay, pdelay;
-	int ntrips, mask;
+	int ntrips;
 	int ret;
 
 	np = of_thermal_zone_find(sensor, id);
@@ -499,15 +501,13 @@ static struct thermal_zone_device *thermal_of_zone_register(struct device_node *
 	of_ops.bind = thermal_of_bind;
 	of_ops.unbind = thermal_of_unbind;
 
-	mask = GENMASK_ULL((ntrips) - 1, 0);
-
 	ret = of_property_read_string(np, "critical-action", &action);
 	if (!ret)
 		if (!of_ops.critical && !strcasecmp(action, "reboot"))
 			of_ops.critical = thermal_zone_device_critical_reboot;
 
 	tz = thermal_zone_device_register_with_trips(np->name, trips, ntrips,
-						     mask, data, &of_ops, &tzp,
+						     0, data, &of_ops, &tzp,
 						     pdelay, delay);
 	if (IS_ERR(tz)) {
 		ret = PTR_ERR(tz);