staging: unisys: fix comments in visornic_main.c

This patch fixes the following types of check patch warnings:
	Block comments use * on subsequent lines
	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>