cosmetic: Update copyright statement, license notice and SPDX
Some of our files didn't have a copyright notice at all, let's add
it. Also, update the notices in other files and ensure a SPDX
identifier is present in all but the most trivial files.
Change-Id: If7fa19ce484b415bc645e39b3d0d666b44b5f0fd
diff --git a/library/RTP_CodecPort.ttcn b/library/RTP_CodecPort.ttcn
index 8f85fd9..b94ae73 100644
--- a/library/RTP_CodecPort.ttcn
+++ b/library/RTP_CodecPort.ttcn
@@ -9,6 +9,8 @@
*
* Released under the terms of GNU General Public License, Version 2 or
* (at your option) any later version.
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
*/
import from IPL4asp_PortType all;