Bluetooth: Use HCI_MGMT instead of HCI_LINK_KEYS flag

Use HCI_MGMT flag instead of HCI_LINK_KEYS flag. There is a problem with
HCI_LINK_KEYS flag since it is set only when link keys are loaded. Otherwise
kernel assumes that old interface is used.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index db58e72..0437200 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -2611,7 +2611,7 @@
 
 	BT_DBG("%s", hdev->name);
 
-	if (!test_bit(HCI_LINK_KEYS, &hdev->dev_flags))
+	if (!test_bit(HCI_MGMT, &hdev->dev_flags))
 		return;
 
 	hci_dev_lock(hdev);
@@ -2687,7 +2687,7 @@
 		hci_conn_drop(conn);
 	}
 
-	if (test_bit(HCI_LINK_KEYS, &hdev->dev_flags))
+	if (test_bit(HCI_MGMT, &hdev->dev_flags))
 		hci_add_link_key(hdev, conn, 1, &ev->bdaddr, ev->link_key,
 				 ev->key_type, pin_len);