Adapt preamble for newly created ssl_msg.c
diff --git a/library/ssl_msg.c b/library/ssl_msg.c
index bed3e52..6cee53a 100644
--- a/library/ssl_msg.c
+++ b/library/ssl_msg.c
@@ -1,7 +1,8 @@
/*
- * SSLv3/TLSv1 shared functions
+ * Generic SSL/TLS messaging layer functions
+ * (record layer + retransmission state machine)
*
- * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
+ * Copyright (C) 2006-2020, ARM Limited, All Rights Reserved
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may