It includes better support for POWER9 processor and the QEMU platform.
DD1.0 workarounds have been removed which simplifies a bit the XIVE
PowerNV model.

Built from submodule.

Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20190310175338.22266-1-clg@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>