power: supply: hwmon: move interface to private header

The interface of power_supply_hwmon.c is only meant to be used by the
psy core. Remove it from the public header file and use the private one
instead.

Signed-off-by: Thomas Weißschuh <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Sebastian Reichel <[e-mail]>

drivers/power/supply/power_supply.h

···
 static inline void power_supply_remove_triggers(struct power_supply *psy) {}
 
 #endif /* CONFIG_LEDS_TRIGGERS */
+
+#ifdef CONFIG_POWER_SUPPLY_HWMON
+
+int power_supply_add_hwmon_sysfs(struct power_supply *psy);
+void power_supply_remove_hwmon_sysfs(struct power_supply *psy);
+
+#else
+
+static inline int power_supply_add_hwmon_sysfs(struct power_supply *psy)
+{
+	return 0;
+}
+
+static inline
+void power_supply_remove_hwmon_sysfs(struct power_supply *psy) {}
+
+#endif /* CONFIG_POWER_SUPPLY_HWMON */

include/linux/power_supply.h

···
 	return false;
 }
 
-#ifdef CONFIG_POWER_SUPPLY_HWMON
-int power_supply_add_hwmon_sysfs(struct power_supply *psy);
-void power_supply_remove_hwmon_sysfs(struct power_supply *psy);
-#else
-static inline int power_supply_add_hwmon_sysfs(struct power_supply *psy)
-{
-	return 0;
-}
-
-static inline
-void power_supply_remove_hwmon_sysfs(struct power_supply *psy) {}
-#endif
-
 #ifdef CONFIG_SYSFS
 ssize_t power_supply_charge_behaviour_show(struct device *dev,
 					   unsigned int available_behaviours,