Merge tag 'accel-tcg-20260310' of https://github.com/philmd/qemu into staging

Accelerators and TCG patches queue

- Improve TCG extract and deposit
- Build accelerator stub files once

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* tag 'accel-tcg-20260310' of https://github.com/philmd/qemu:
  accel/qtest: Build once as common object
  accel/xen: Build without target-specific knowledge
  accel/hvf: Build without target-specific knowledge
  accel/mshv: Build without target-specific knowledge
  accel/mshv: Forward-declare mshv_root_hvcall structure
  accel/stubs: Build stubs once
  accel/kvm: Make kvm_irqchip*notifier() declaration non target-specific
  accel/kvm: Include missing 'exec/cpu-common.h' header
  target/hppa: Expand tcg_global_mem_new() -> tcg_global_mem_new_i64()
  tcg/optimize: possibly expand deposit into zero with shifts
  tcg: target-dependent lowering of extract to shr/and
  tcg: Add tcg_op_imm_match
  tcg: Expand missing rotri with extract2
  tcg/optimize: Lower unsupported extract2 during optimize
  tcg/optimize: Lower unsupported deposit during optimize
  tcg: Drop extract+shl expansions in tcg_gen_deposit_z_*

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