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

pc,pci: bugfixes

Small bugfixes all over the place.

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

# gpg: Signature made Tue 03 Aug 2021 21:32:43 BST
# 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:
  Drop _DSM 5 from expected DSDTs on ARM
  Revert "acpi/gpex: Inform os to keep firmware resource map"
  arm/acpi: allow DSDT changes
  acpi: x86: pcihp: add support hotplug on multifunction bridges
  hw/pcie-root-port: Fix hotplug for PCI devices requiring IO

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