staging: unisys: visorbus: visorbus_main.c: Adjust code layout

Adjusts the ordering of function statements, as well as modifies
whitespace usage, in order to create a more uniform coding style.

Signed-off-by: David Binder <david.binder@unisys.com>
Signed-off-by: David Kershner <david.kershner@unisys.com>
Reviewed-by: David Binder <david.binder@unisys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>