pci, pc, virtio: fixes, features

AMD IOMMU VAPIC support + fixes all over the place.

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

# gpg: Signature made Mon 05 Nov 2018 18:24:10 GMT
# gpg:                using RSA key 281F0DB8D28D5469
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>"
# gpg:                 aka "Michael S. Tsirkin <mst@redhat.com>"
# Primary key fingerprint: 0270 606B 6F3C DF3D 0B17  0970 C350 3912 AFBE 8E67
#      Subkey fingerprint: 5D09 FD08 71C8 F85B 94CA  8A0D 281F 0DB8 D28D 5469

* remotes/mst/tags/for_upstream: (33 commits)
  vhost-scsi: prevent using uninitialized vqs
  piix_pci: fix i440fx data sheet link
  piix: use TYPE_FOO constants than string constats
  i440fx: use ARRAY_SIZE for pam_regions
  pci_bridge: fix typo in comment
  hw/pci: Add missing include
  hw/pci-bridge/ioh3420: Remove unuseful header
  hw/pci-bridge/xio3130: Remove unused functions
  tests/bios-tables-test: add 64-bit PCI MMIO aperture round-up test on Q35
  bios-tables-test: prepare expected files for mmio64
  hw/pci-host/x86: extend the 64-bit PCI hole relative to the fw-assigned base
  hw/pci-host/x86: extract get_pci_hole64_start_value() helpers
  pci-testdev: add optional memory bar
  MAINTAINERS: list "tests/acpi-test-data" files in ACPI/SMBIOS section
  x86_iommu/amd: Enable Guest virtual APIC support
  x86_iommu/amd: Add interrupt remap support when VAPIC is enabled
  i386: acpi: add IVHD device entry for IOAPIC
  x86_iommu/amd: Add interrupt remap support when VAPIC is not enabled
  x86_iommu/amd: Prepare for interrupt remap support
  x86_iommu/amd: make the address space naming consistent with intel-iommu
  ...

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