Merge remote-tracking branch 'afaerber/qom-cpu-x86-prop.v3' into staging

* afaerber/qom-cpu-x86-prop.v3:
  target-i386: Introduce "tsc-frequency" property for X86CPU
  target-i386: Prepare "vendor" property for X86CPU
  target-i386: Introduce "xlevel" property for X86CPU
  target-i386: Introduce "level" property for X86CPU
  target-i386: Add property getter for CPU model-id
  target-i386: Add property getter for CPU stepping
  target-i386: Add property getter for CPU model
  target-i386: Add property getter for CPU family
  target-i386: Add "model-id" property to X86CPU
  target-i386: Add "stepping" property to X86CPU
  target-i386: Add "model" property to X86CPU
  target-i386: Add "family" property to X86CPU
  target-i386: Add range check for -cpu ,family=x
  target-i386: Pass X86CPU to cpu_x86_register()
  target-i386: Fix x86_cpuid_set_model_id()