staging: unisys: visorbus: move controlvm_payload_bytes_buffered

This patch moves the unsigned long controlvm_payload_bytes_buffered
from the module parameters location to a more appropriate location
below the controlvm_payload_info.

Signed-off-by: Jon Frisch <jon.frisch@unisys.com>
Signed-off-by: David Kershner <david.kershner@unisys.com>
Reported-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>