staging: unisys: fix spacing in visorchipset.c

This patch fixes the following checkpatch warning:
spaces preferred around that ‘*’ or ‘|’

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>