[SEBA-974] Add copyright for Edgecore

Change-Id: I82a625d63ae02eb594507dcce4f39bcb59cb08f3
diff --git a/demo_test/Makefile b/demo_test/Makefile
index 4ceae91..0e206de 100644
--- a/demo_test/Makefile
+++ b/demo_test/Makefile
@@ -1,4 +1,5 @@
 # Copyright 2018-present Open Networking Foundation
+# Copyright 2018-present Edgecore Networks Corporation
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.