Bluetooth: Use managed version of led_trigger_register in LED trigger

Recently a managed version of led_trigger_register was introduced.
Using devm_led_trigger_register allows to simplify the LED trigger code.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
diff --git a/net/bluetooth/leds.c b/net/bluetooth/leds.c
index ded7c88..8319c84 100644
--- a/net/bluetooth/leds.c
+++ b/net/bluetooth/leds.c
@@ -55,7 +55,7 @@
 	if (!htrig->led_trigger.name)
 		goto err_alloc;
 
-	if (led_trigger_register(&htrig->led_trigger))
+	if (devm_led_trigger_register(&hdev->dev, &htrig->led_trigger))
 		goto err_register;
 
 	return &htrig->led_trigger;
@@ -72,9 +72,3 @@
 	/* initialize power_led */
 	hdev->power_led = led_allocate_basic(hdev, power_activate, "power");
 }
-
-void hci_leds_exit(struct hci_dev *hdev)
-{
-	if (hdev->power_led)
-		led_trigger_unregister(hdev->power_led);
-}