Fix/Update copyright notices; Add SPDX annotation
Let's fix some erroneous/accidential references to wrong license,
update copyright information where applicable and introduce a
SPDX-License-Identifier to all files.
Change-Id: I39af26c6aaaf5c926966391f6565fc5936be21af
diff --git a/src/sim/class_tables.c b/src/sim/class_tables.c
index fcf67f0..593b2e8 100644
--- a/src/sim/class_tables.c
+++ b/src/sim/class_tables.c
@@ -3,6 +3,8 @@
/*
* (C) 2016 by Harald Welte <laforge@gnumonks.org>
*
+ * SPDX-License-Identifier: GPL-2.0+
+ *
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2, or
* any later version as published by the Free Software Foundation.