Merge remote-tracking branch 'remotes/ehabkost/tags/x86-next-pull-request' into staging

x86 queue for -rc2

Fixes:
* EPYC CPU model APIC ID topology fixes (Babu Moger)
* Fix crash when enabling intel-pt on older machine types
  (Luwei Kang)
* Add missing ARCH_CAPABILITIES bits to Icelake-Server CPU model
  (Xiaoyao Li)

# gpg: Signature made Thu 02 Apr 2020 23:18:30 BST
# gpg:                using RSA key 5A322FD5ABC4D3DBACCFD1AA2807936F984DC5A6
# gpg:                issuer "ehabkost@redhat.com"
# gpg: Good signature from "Eduardo Habkost <ehabkost@redhat.com>" [full]
# Primary key fingerprint: 5A32 2FD5 ABC4 D3DB ACCF  D1AA 2807 936F 984D C5A6

* remotes/ehabkost/tags/x86-next-pull-request:
  target/i386: Add ARCH_CAPABILITIES related bits into Icelake-Server CPU model
  target/i386: set the CPUID level to 0x14 on old machine-type
  i386: Fix pkg_id offset for EPYC cpu models
  target/i386: Enable new apic id encoding for EPYC based cpus models
  hw/i386: Move arch_id decode inside x86_cpus_init
  i386: Introduce use_epyc_apic_id_encoding in X86CPUDefinition
  hw/i386: Introduce apicid functions inside X86MachineState
  target/i386: Cleanup and use the EPYC mode topology functions
  hw/386: Add EPYC mode topology decoding functions

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