thermal: core: Add function for registering tripless thermal zones

Multiple callers of thermal_zone_device_register() don't pass any trips
to it and they might use a shortened argument list for that, so add
a special function with fewer arguments for this purpose.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

drivers/thermal/thermal_core.c

@@ -1400,6 +1400,17 @@ struct thermal_zone_device *thermal_zone_device_register(const char *type, int n
 }
 EXPORT_SYMBOL_GPL(thermal_zone_device_register);
 
+struct thermal_zone_device *thermal_tripless_zone_device_register(
+					const char *type,
+					void *devdata,
+					struct thermal_zone_device_ops *ops,
+					const struct thermal_zone_params *tzp)
+{
+	return thermal_zone_device_register_with_trips(type, NULL, 0, 0, devdata,
+						       ops, tzp, 0, 0);
+}
+EXPORT_SYMBOL_GPL(thermal_tripless_zone_device_register);
+
 void *thermal_zone_device_priv(struct thermal_zone_device *tzd)
 {
 	return tzd->devdata;

include/linux/thermal.h

@@ -317,6 +317,12 @@ struct thermal_zone_device *thermal_zone_device_register_with_trips(
 					const struct thermal_zone_params *tzp,
 					int passive_delay, int polling_delay);
 
+struct thermal_zone_device *thermal_tripless_zone_device_register(
+					const char *type,
+					void *devdata,
+					struct thermal_zone_device_ops *ops,
+					const struct thermal_zone_params *tzp);
+
 void thermal_zone_device_unregister(struct thermal_zone_device *tz);
 
 void *thermal_zone_device_priv(struct thermal_zone_device *tzd);
@@ -377,6 +383,13 @@ static inline struct thermal_zone_device *thermal_zone_device_register_with_trip
 					int passive_delay, int polling_delay)
 { return ERR_PTR(-ENODEV); }
 
+static inline struct thermal_zone_device *thermal_tripless_zone_device_register(
+					const char *type,
+					void *devdata,
+					struct thermal_zone_device_ops *ops,
+					const struct thermal_zone_params *tzp)
+{ return ERR_PTR(-ENODEV); }
+
 static inline void thermal_zone_device_unregister(struct thermal_zone_device *tz)
 { }