Bluetooth: hci_qca: Fix build error

This fixes the following build error introduced by b80f4e3
("Bluetooth: hci_qca: schedule a devm action for disabling the clock"):

drivers/bluetooth/hci_qca.c: In function ‘qca_serdev_remove’:
drivers/bluetooth/hci_qca.c:2501:2: error: label at end of compound statement
 2501 |  default:
      |  ^~~~~~~

Fixes: b80f4e3 ("Bluetooth: hci_qca: schedule a devm action for disabling the clock")
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>

drivers/bluetooth/hci_qca.c

@@ -2499,6 +2499,7 @@ static void qca_serdev_remove(struct serdev_device *serdev)
 			qca_power_shutdown(&qcadev->serdev_hu);
 		break;
 	default:
+		break;
 	}
 
 	hci_uart_unregister_device(&qcadev->serdev_hu);