Bluetooth: Schedule HCI_TX task after connection cleanup

After ACL  disconnection and removal of pending acl
acknowledgement, we have to schedule HCI_TX task. This will
allow other active connection to send ACL packets.

Change-Id: I3ddf61a3c7ff149b05e963159e10af0ab6ef6143
Signed-off-by: AnubhavGupta <anubhavg@codeaurora.org>

net/bluetooth/hci_conn.c

@@ -459,6 +459,8 @@ int hci_conn_del(struct hci_conn *conn)
 	if (hdev->notify)
 		hdev->notify(hdev, HCI_NOTIFY_CONN_DEL);
 
+	tasklet_schedule(&hdev->tx_task);
+
 	tasklet_enable(&hdev->tx_task);
 
 	skb_queue_purge(&conn->data_q);