staging: unisys: vbushelper.h fix Block comment

This patch fixes last checkpatch warning for vbushelper.h
WARNING: Block comments use a trailing */ on a separate line

Signed-off-by: Erik Arfvidson <erik.arfvidson@unisys.com>
Signed-off-by: Benjamin Romer <benjamin.romer@unisys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>