[Bluetooth] Skip raw mode devices when choosing source device

When selecting the best source device for outgoing connections the
devices in raw mode should be skipped.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

net/bluetooth/hci_conn.c

@@ -226,7 +226,7 @@ struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src)
 	list_for_each(p, &hci_dev_list) {
 		struct hci_dev *d = list_entry(p, struct hci_dev, list);
 
-		if (!test_bit(HCI_UP, &d->flags))
+		if (!test_bit(HCI_UP, &d->flags) || test_bit(HCI_RAW, &d->flags))
 			continue;
 
 		/* Simple routing: