staging: unisys: visorbus: controlvmchannel.h: fix spacing

This patch fixes space and tab aligned comments in
controlvmchannel.h.

Signed-off-by: Erik Arfvidson <erik.arfvidson@gmail.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>