Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into staging

pc,pci,virtio: fixes, features

Fixes all over the place.
PXB support for ARM.
boot index for vhost-user-fs.

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

# gpg: Signature made Sun 17 Jan 2021 11:44:55 GMT
# gpg:                using RSA key 5D09FD0871C8F85B94CA8A0D281F0DB8D28D5469
# gpg:                issuer "mst@redhat.com"
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>" [full]
# gpg:                 aka "Michael S. Tsirkin <mst@redhat.com>" [full]
# 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:
  acpi: Update _DSM method in expected files
  acpi: Enable pxb unit-test for ARM virt machine
  Kconfig: Compile PXB for ARM_VIRT
  acpi/gpex: Exclude pxb's resources from PCI0
  acpi/gpex: Inform os to keep firmware resource map
  acpi: Add addr offset in build_crs
  acpi: Fix unmatched expected DSDT.pxb file
  acpi: Allow DSDT acpi table changes
  vhost-user-fs: add the "bootindex" property
  pci/shpc: don't push attention button when ejecting powered-off device

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