staging: unisys: visorbus: merge guestlinuxdebug with vmcallinterface.h

Merge guestlinuxdebug into vmcallinterface.h since it is dependent on it

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>