Bluetooth: Add definitions for link key types

Introduce the link key types defs and use them instead of magic numbers.

Signed-off-by: Waldemar Rymarkiewicz <waldemar.rymarkiewicz@tieto.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index 98aa24b..07d0ba3 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -1050,7 +1050,7 @@
 	if (new_key)
 		mgmt_new_key(hdev->id, key, old_key_type);
 
-	if (type == 0x06)
+	if (type == HCI_LK_CHANGED_COMBINATION)
 		key->type = old_key_type;
 
 	return 0;
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index e64a3de..fbbb63f 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -2053,15 +2053,16 @@
 	BT_DBG("%s found key type %u for %s", hdev->name, key->type,
 							batostr(&ev->bdaddr));
 
-	if (!test_bit(HCI_DEBUG_KEYS, &hdev->flags) && key->type == 0x03) {
+	if (!test_bit(HCI_DEBUG_KEYS, &hdev->flags) &&
+				key->type == HCI_LK_DEBUG_COMBINATION) {
 		BT_DBG("%s ignoring debug key", hdev->name);
 		goto not_found;
 	}
 
 	conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
 
-	if (key->type == 0x04 && conn && conn->auth_type != 0xff &&
-						(conn->auth_type & 0x01)) {
+	if (key->type == HCI_LK_UNAUTH_COMBINATION && conn &&
+			conn->auth_type != 0xff && (conn->auth_type & 0x01)) {
 		BT_DBG("%s ignoring unauthenticated key", hdev->name);
 		goto not_found;
 	}