thermal/core: Move thermal_set_delay_jiffies to static

The function 'thermal_set_delay_jiffies' is only used in
thermal_core.c but it is defined and implemented in a separate
file. Move the function to thermal_core.c and make it static.

Cc: Alexandre Bailon <abailon@baylibre.com>
Cc: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linexp.org>
Reviewed-by: Lukasz Luba <lukasz.luba@arm.com>
Link: https://lore.kernel.org/r/20220722200007.1839356-7-daniel.lezcano@linexp.org
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>

drivers/thermal/thermal_core.c

@@ -1155,6 +1155,13 @@ static void bind_tz(struct thermal_zone_device *tz)
 	mutex_unlock(&thermal_list_lock);
 }
 
+static void thermal_set_delay_jiffies(unsigned long *delay_jiffies, int delay_ms)
+{
+	*delay_jiffies = msecs_to_jiffies(delay_ms);
+	if (delay_ms > 1000)
+		*delay_jiffies = round_jiffies(*delay_jiffies);
+}
+
 /**
  * thermal_zone_device_register() - register a new thermal zone device
  * @type:	the thermal zone device type

drivers/thermal/thermal_core.h

@@ -112,7 +112,6 @@ int thermal_build_list_of_policies(char *buf);
 
 /* Helpers */
 void thermal_zone_set_trips(struct thermal_zone_device *tz);
-void thermal_set_delay_jiffies(unsigned long *delay_jiffies, int delay_ms);
 
 /* sysfs I/F */
 int thermal_zone_create_device_groups(struct thermal_zone_device *, int);

drivers/thermal/thermal_helpers.c

@@ -174,13 +174,6 @@ void thermal_zone_set_trips(struct thermal_zone_device *tz)
 	mutex_unlock(&tz->lock);
 }
 
-void thermal_set_delay_jiffies(unsigned long *delay_jiffies, int delay_ms)
-{
-	*delay_jiffies = msecs_to_jiffies(delay_ms);
-	if (delay_ms > 1000)
-		*delay_jiffies = round_jiffies(*delay_jiffies);
-}
-
 static void thermal_cdev_set_cur_state(struct thermal_cooling_device *cdev,
 				       int target)
 {