Merge tag 'single-binary-20251030' of https://github.com/philmd/qemu into staging

Merge tag 'single-binary-20251030' of https://github.com/philmd/qemu into staging

Various patches related to single binary work:

- Make hw/arm/ common by adding a QOM type to machines to
  tag in which binary (32 or 64-bit) they can be used.
  Convert the Virt and SBSA-Ref machines.
- Build Xen files once

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* tag 'single-binary-20251030' of https://github.com/philmd/qemu: (23 commits)
  hw/riscv: Replace target_ulong uses
  hw/xen: Build only once
  hw/xen: Replace target_ulong by agnostic target_long_bits()
  hw/xen: Use BITS_PER_BYTE & MAKE_64BIT_MASK() in req_size_bits()
  hw/arm/meson: Move Xen files to arm_common_ss[]
  hw/arm/virt: Build only once
  hw/arm/virt-acpi-build: Build only once
  hw/arm/virt-acpi-build: Include missing 'cpu.h' header
  hw/arm/sbsa-ref: Build only once
  hw/arm/sbsa-ref: Include missing 'cpu.h' header
  hw/arm/virt: Get default CPU type at runtime
  hw/arm/virt: Replace TARGET_AARCH64 -> target_aarch64()
  qemu/target_info: Add target_base_arm() helper
  qemu/target_info: Add target_aarch64() helper
  qemu/target_info: Add target_arm() helper
  hw/arm/virt: Check accelerator availability at runtime
  hw/arm/virt: Register valid CPU types dynamically
  config/target: Implement per-binary TargetInfo structure (ARM, AARCH64)
  meson: Prepare to accept per-binary TargetInfo structure implementation
  hw/arm: Filter machine types for qemu-system-arm/aarch64 binaries
  ...

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>