Add LICENSE file

Change-Id: I7dd5f33e252f21ce8b4ce84653a032a2a651e0fa
diff --git a/Makefile b/Makefile
index edc5af7..9beff28 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
 #
 # SPDX-FileCopyrightText: 2022-present Intel Corporation
 # SPDX-FileCopyrightText: 2020-present Open Networking Foundation <info@opennetworking.org>
-# SPDX-License-Identifier: LicenseRef-ONF-Member-1.01
+# SPDX-License-Identifier: Apache-2.0
 #
 define PROJECT_HELP_MSG
 Usage: