board: tq: fix spelling of "TQ-Systems"

"TQ-Systems" is written with a dash.

Signed-off-by: Matthias Schiffer <matthias.schiffer@ew.tq-group.com>
diff --git a/board/tq/tqma6/tqma6_wru4.c b/board/tq/tqma6/tqma6_wru4.c
index 3b1bc60..5d23991 100644
--- a/board/tq/tqma6/tqma6_wru4.c
+++ b/board/tq/tqma6/tqma6_wru4.c
@@ -3,7 +3,7 @@
  * Copyright (C) 2012 Freescale Semiconductor, Inc.
  * Author: Fabio Estevam <fabio.estevam@freescale.com>
  *
- * Copyright (C) 2013, 2014 TQ Systems (ported SabreSD to TQMa6x)
+ * Copyright (C) 2013, 2014 TQ-Systems (ported SabreSD to TQMa6x)
  * Author: Markus Niebel <markus.niebel@tq-group.com>
  *
  * Copyright (C) 2015 Stefan Roese <sr@denx.de>