Merge tag 'pull-request-2026-03-05' of https://gitlab.com/thuth/qemu into staging

* Remove deprecated i440fx and q35 machine types -2.8 up to -2.12
* Remove the related hw_compat handling in various devices

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# gpg:                 aka "Thomas Huth <thuth@redhat.com>" [full]
# gpg:                 aka "Thomas Huth <huth@tuxfamily.org>" [full]
# gpg:                 aka "Thomas Huth <th.huth@posteo.de>" [undefined]
# Primary key fingerprint: 27B8 8847 EEE0 2501 18F3  EAB9 2ED9 D774 FE70 2DB5

* tag 'pull-request-2026-03-05' of https://gitlab.com/thuth/qemu: (28 commits)
  hw/display/vga-pci: Do not expose the 'global-vmstate' property
  hw/audio/hda-codec: Remove HDAAudioState::use_timer field
  hw/core/machine: Remove hw_compat_2_12[] array
  hw/core/machine: Remove hw_compat_2_11[] array
  hw/input/virtio-input: Remove VirtIOInputHID::wheel_axis field
  hw/core/machine: Remove hw_compat_2_10[] array
  hw/i386/pc: Remove pc_compat_2_12[] array
  hw/i386/pc: Remove deprecated pc-q35-2.12 and pc-i440fx-2.12 machines
  hw/i386/pc: Remove pc_compat_2_11[] array
  hw/i386/pc: Remove deprecated pc-q35-2.11 and pc-i440fx-2.11 machines
  hw/i386/pc: Remove pc_compat_2_10[] array
  hw/i386/pc: Remove deprecated pc-q35-2.10 and pc-i440fx-2.10 machines
  tests/qtest/test-x86-cpuid-compat: Remove the test with the i440fx-2.9 machine
  hw/i386/x86-iommu: Remove X86IOMMUState::pt_supported field
  hw/pci-bridge/gen_pcie_rp: Remove GenPCIERootPort::migrate_msix field
  hw/net/virtio-net: Remove VirtIONet::mtu_bypass_backend field
  hw/core/machine: Remove hw_compat_2_9[] array
  hw/i386/pc: Remove pc_compat_2_9[] array
  hw/i386/pc: Remove deprecated pc-q35-2.9 and pc-i440fx-2.9 machines
  hw/virtio/virtio-pci: Remove VIRTIO_PCI_FLAG_INIT_PM definition
  ...

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