staging: unisys: visorbus: Move non global guestlinuxdebug to visorbus

Guestlinuxdebug.h is only used by visorbus, move the include file
into its directory instead of the global one.
Signed-off-by: David Kershner <david.kershner@unisys.com>
Reviewed-by: Tim Sell <Timothy.Sell@unisys.com>
Reported-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>