power: supply: sysfs: Move power_supply_show_enum_with_available() up

Move power_supply_show_enum_with_available() higher up in
the power_supply_sysfs.c file.

This is a preparation patch to avoid needing a forward declaration
when replacing power_supply_show_usb_type() with it later on.

This commit only moves the function, there are no changes to it.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20240831142039.28830-6-hdegoede@redhat.comSigned-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>

drivers/power/supply/power_supply_sysfs.c

@@ -237,6 +237,37 @@ static enum power_supply_property dev_attr_psp(struct device_attribute *attr)
 	return  to_ps_attr(attr) - power_supply_attrs;
 }
 
+static ssize_t power_supply_show_enum_with_available(
+			struct device *dev, const char * const labels[], int label_count,
+			unsigned int available_values, int value, char *buf)
+{
+	bool match = false, available, active;
+	ssize_t count = 0;
+	int i;
+
+	for (i = 0; i < label_count; i++) {
+		available = available_values & BIT(i);
+		active = i == value;
+
+		if (available && active) {
+			count += sysfs_emit_at(buf, count, "[%s] ", labels[i]);
+			match = true;
+		} else if (available) {
+			count += sysfs_emit_at(buf, count, "%s ", labels[i]);
+		}
+	}
+
+	if (!match) {
+		dev_warn(dev, "driver reporting unavailable enum value %d\n", value);
+		return -EINVAL;
+	}
+
+	if (count)
+		buf[count - 1] = '\n';
+
+	return count;
+}
+
 static ssize_t power_supply_show_usb_type(struct device *dev,
 					  const struct power_supply_desc *desc,
 					  union power_supply_propval *value,
@@ -518,37 +549,6 @@ int power_supply_uevent(const struct device *dev, struct kobj_uevent_env *env)
 	return ret;
 }
 
-static ssize_t power_supply_show_enum_with_available(
-			struct device *dev, const char * const labels[], int label_count,
-			unsigned int available_values, int value, char *buf)
-{
-	bool match = false, available, active;
-	ssize_t count = 0;
-	int i;
-
-	for (i = 0; i < label_count; i++) {
-		available = available_values & BIT(i);
-		active = i == value;
-
-		if (available && active) {
-			count += sysfs_emit_at(buf, count, "[%s] ", labels[i]);
-			match = true;
-		} else if (available) {
-			count += sysfs_emit_at(buf, count, "%s ", labels[i]);
-		}
-	}
-
-	if (!match) {
-		dev_warn(dev, "driver reporting unavailable enum value %d\n", value);
-		return -EINVAL;
-	}
-
-	if (count)
-		buf[count - 1] = '\n';
-
-	return count;
-}
-
 ssize_t power_supply_charge_behaviour_show(struct device *dev,
 					   unsigned int available_behaviours,
 					   enum power_supply_charge_behaviour current_behaviour,