staging: unisys: visorbus: visorchipset.c: Remove useless initializations

Found several more useless initializations in visorchipset.c get rid of
them.

Signed-off-by: David Kershner <david.kershner@unisys.com>
Reviewed-by: Tim Sell <timothy.sell@unisys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>