Add SPDX-License-Identifier to all source files
Change-Id: I9f2bc8c5d8a2c0bb0dd6caa4de5e2cb11be210e7
diff --git a/src/input/rs232.c b/src/input/rs232.c
index 9da01a3..c801ab2 100644
--- a/src/input/rs232.c
+++ b/src/input/rs232.c
@@ -7,6 +7,8 @@
* Authors: Harald Welte <laforge@gnumonks.org>
* Pablo Neira Ayuso <pablo@gnumonks.org>
*
+ * SPDX-License-Identifier: AGPL-3.0+
+ *
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation; either version 3 of the License, or