Merge remote-tracking branch 'remotes/philmd/tags/abstract-arch-cpu-20220307' into...

Merge remote-tracking branch 'remotes/philmd/tags/abstract-arch-cpu-20220307' into staging

- Re-org accel/ and softmmu/ to have more target-agnostic objects.

- Use CPUArchState as an abstract type, defined by each target
  (CPUState is our interface with generic code, CPUArchState is
   our interface with target-specific code).

# gpg: Signature made Sun 06 Mar 2022 23:23:19 GMT
# gpg:                using RSA key FAABE75E12917221DCFD6BB2E3E32C2CDEADC0DE
# gpg: Good signature from "Philippe Mathieu-Daudé (F4BUG) <f4bug@amsat.org>" [unknown]
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg:          There is no indication that the signature belongs to the owner.
# Primary key fingerprint: FAAB E75E 1291 7221 DCFD  6BB2 E3E3 2C2C DEAD C0DE

* remotes/philmd/tags/abstract-arch-cpu-20220307: (33 commits)
  accel/tcg: Remove pointless CPUArchState casts
  target/i386: Remove pointless CPUArchState casts
  target: Use ArchCPU as interface to target CPU
  target: Introduce and use OBJECT_DECLARE_CPU_TYPE() macro
  target: Use CPUArchState as interface to target-specific CPU state
  target: Use forward declared type instead of structure type
  target/hexagon: Add missing 'hw/core/cpu.h' include
  target: Include missing 'cpu.h'
  Hexagon (target/hexagon) convert to OBJECT_DECLARE_TYPE
  target/i386/tcg/sysemu: Include missing 'exec/exec-all.h' header
  cpu: Add missing 'exec/exec-all.h' and 'qemu/accel.h' headers
  exec/cpu_ldst: Include 'cpu.h' to get target_ulong definition
  meson: Display libfdt as disabled when system emulation is disabled
  softmmu: Build target-agnostic objects once
  softmmu: Add qemu_init_arch_modules()
  exec/cpu: Make address_space_init/reloading_memory_map target agnostic
  exec/gdbstub: Make gdb_exit() / gdb_set_stop_cpu() target agnostic
  misc: Add missing "sysemu/cpu-timers.h" include
  misc: Remove unnecessary "sysemu/cpu-timers.h" include
  softmmu/cpu-timers: Remove unused 'exec/exec-all.h' header
  ...

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