Bluetooth: Fix handling of getpeername() for HCI sockets

The HCI sockets do not have a peer associated with it and so make sure
that getpeername() returns EOPNOTSUPP since this operation is actually
not supported on HCI sockets.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>

net/bluetooth/hci_sock.c

@@ -699,6 +699,9 @@ static int hci_sock_getname(struct socket *sock, struct sockaddr *addr,
 
 	BT_DBG("sock %p sk %p", sock, sk);
 
+	if (peer)
+		return -EOPNOTSUPP;
+
 	if (!hdev)
 		return -EBADFD;