staging: unisys: fix copyright symbol in vbushelper.h

The copyright character in vbushelper.h isn't UTF-8 - swap it out for a
good, old-fashioned (C).
Signed-off-by: Benjamin Romer <benjamin.romer@unisys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/unisys/include/vbushelper.h

 /* vbushelper.h
  *
- * Copyright  2011 - 2013 UNISYS CORPORATION
+ * Copyright (C) 2011 - 2013 UNISYS CORPORATION
  * All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify