ppc: spapr: add 2.4 machine type The following patches will limit the following things to legacy machine type: - maximum number of virtqueues for virtio-pci were limited to 64 Cc: Alexander Graf <agraf@suse.de> Cc: qemu-ppc@nongnu.org Signed-off-by: Jason Wang <jasowang@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Alexander Graf <agraf@suse.de>