Bluetooth: Set appearance only for LE capable controllers

Setting appearance on controllers without LE support will result
in No Supported error.
Signed-off-by: Michał Narajowski <michal.narajowski@codecoup.pl>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>

net/bluetooth/mgmt.c

@@ -3178,6 +3178,10 @@ static int set_appearance(struct sock *sk, struct hci_dev *hdev, void *data,
 
 	BT_DBG("");
 
+	if (!lmp_le_capable(hdev))
+		return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_APPEARANCE,
+				       MGMT_STATUS_NOT_SUPPORTED);
+
 	apperance = le16_to_cpu(cp->appearance);
 
 	hci_dev_lock(hdev);