pc, acpi, virtio

Most notably this includes virtio 1 patches
Still not all devices converted, and not fully spec compliant,
so disabled by default.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

# gpg: Signature made Thu Jun 11 12:53:08 2015 BST using RSA key ID D28D5469
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>"
# gpg:                 aka "Michael S. Tsirkin <mst@redhat.com>"

* remotes/mst/tags/for_upstream: (42 commits)
  i386/acpi-build: fix PXB workarounds for unsupported BIOSes
  i386/acpi-build: more traditional _UID and _HID for PXB root buses
  vhost-scsi: move qdev properties into vhost-scsi.c
  virtio-9p-device: move qdev properties into virtio-9p-device.c
  virtio-serial-bus: move qdev properties into virtio-serial-bus.c
  virtio-rng: move qdev properties into virtio-rng.c
  virtio-scsi: move qdev properties into virtio-scsi.c
  virtio-net.h: Remove unsed DEFINE_VIRTIO_NET_PROPERTIES
  virtio-net: move qdev properties into virtio-net.c
  virtio-input: emulated devices [pci]
  virtio-input: core code & base class [pci]
  pci: add PCI_CLASS_INPUT_*
  virtio-pci: fill VirtIOPCIRegions early.
  virtio-pci: drop identical virtio_pci_cap
  virtio-pci: move cap type to VirtIOPCIRegion
  virtio-pci: move virtio_pci_add_mem_cap call to virtio_pci_modern_region_map
  virtio-pci: add virtio_pci_modern_region_map()
  virtio-pci: add virtio_pci_modern_regions_init()
  virtio-pci: add struct VirtIOPCIRegion for virtio-1 regions
  virtio-balloon: switch to virtio_add_feature
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>