Staging: unisys: visorbus: visorchipset.c: style fix

Changed file permissions to octal sytle.
Found using checkpatch.

Acked-by: David Kershner <david.kershner@unisys.com>
Signed-off-by: Derek Robson <robsonde@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>