IASL isn't needed when dumping ACPI tables from guest for
rebuild purposes. So move this part out from IASL branch.

Makes rebuild-expected-aml.sh work without IASL installed
on host.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Message-Id: <20190708092410.11167-2-imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>