Add copright headers and license files, list Pablo as author
The kernel module still only listed me as author, even though Pablo
was doing most of the work on it after my initial incomplete version.
diff --git a/src/gtp-rtnl.c b/src/gtp-rtnl.c
index 6ecea08..22b9430 100644
--- a/src/gtp-rtnl.c
+++ b/src/gtp-rtnl.c
@@ -1,3 +1,25 @@
+/* GTP specific RTNetlink helper functions */
+
+/* (C) 2014 by sysmocom - s.f.m.c. GmbH
+ * Author: Pablo Neira Ayuso <pablo@gnumonks.org>
+ *
+ * All Rights Reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>