thermal: imx: 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 imx 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/imx_thermal.c

@@ -115,7 +115,8 @@ struct thermal_soc_data {
 };
 
 static struct thermal_trip trips[] = {
-	[IMX_TRIP_PASSIVE]  = { .type = THERMAL_TRIP_PASSIVE  },
+	[IMX_TRIP_PASSIVE]  = { .type = THERMAL_TRIP_PASSIVE,
+				.flags = THERMAL_TRIP_FLAG_RW_TEMP },
 	[IMX_TRIP_CRITICAL] = { .type = THERMAL_TRIP_CRITICAL },
 };
 
@@ -700,7 +701,7 @@ static int imx_thermal_probe(struct platform_device *pdev)
 	data->tz = thermal_zone_device_register_with_trips("imx_thermal_zone",
 							   trips,
 							   ARRAY_SIZE(trips),
-							   BIT(IMX_TRIP_PASSIVE), data,
+							   0, data,
 							   &imx_tz_ops, NULL,
 							   IMX_PASSIVE_DELAY,
 							   IMX_POLLING_DELAY);