staging: unisys: visorinput: fix comment format

Fix the multi-line comment formatting in visorinput.c.

Signed-off-by: Tim Sell <timothy.sell@unisys.com>
Signed-off-by: Benjamin Romer <benjamin.romer@unisys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>