batman-adv: Update copyright years for 2018

Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
diff --git a/net/batman-adv/tp_meter.c b/net/batman-adv/tp_meter.c
index 8b57671..11520de 100644
--- a/net/batman-adv/tp_meter.c
+++ b/net/batman-adv/tp_meter.c
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: GPL-2.0
-/* Copyright (C) 2012-2017  B.A.T.M.A.N. contributors:
+/* Copyright (C) 2012-2018  B.A.T.M.A.N. contributors:
  *
  * Edo Monticelli, Antonio Quartulli
  *