Merge remote-tracking branch 'remotes/dgibson/tags/ppc-for-2.12-20180306' into staging

Merge remote-tracking branch 'remotes/dgibson/tags/ppc-for-2.12-20180306' into staging

ppc patch queue 2018-03-06

This pull request supersedes ppc-for-2.12-20180302 which had compile
problems with some gcc versions.  It also contains a few additional
patches.

Highlights are:
    * New Sam460ex machine type
    * Yet more fixes related to vcpu id allocation for spapr
    * Numerous macio cleanupsr
    * Some enhancements to the Spectre/Meltdown fixes for pseries,
      allowing use of a better mitigation for indirect branch based
      exploits
    * New pseries machine types with Spectre/Meltdown mitigations
      enabled (stop gap until libvirt and management understands the
      machine options)
    * A handful of other fixes

# gpg: Signature made Tue 06 Mar 2018 04:01:00 GMT
# gpg:                using RSA key 6C38CACA20D9B392
# gpg: Good signature from "David Gibson <david@gibson.dropbear.id.au>"
# gpg:                 aka "David Gibson (Red Hat) <dgibson@redhat.com>"
# gpg:                 aka "David Gibson (ozlabs.org) <dgibson@ozlabs.org>"
# gpg:                 aka "David Gibson (kernel.org) <dwg@kernel.org>"
# Primary key fingerprint: 75F4 6586 AE61 A66C C44E  87DC 6C38 CACA 20D9 B392

* remotes/dgibson/tags/ppc-for-2.12-20180306: (30 commits)
  PowerPC: Add TS bits into msr_mask
  adb: add trace-events for monitoring keyboard/mouse during bus enumeration
  PPC: e500: Fix duplicate kernel load and device tree overlap
  hw/ppc/spapr,e500: Use new property "stdout-path" for boot console
  ppc/spapr-caps: Define the pseries-2.12-sxxm machine type
  ppc/spapr-caps: Convert cap-ibs to custom spapr-cap
  ppc/spapr-caps: Convert cap-sbbc to custom spapr-cap
  ppc/spapr-caps: Convert cap-cfpc to custom spapr-cap
  ppc/spapr-caps: Add support for custom spapr_capabilities
  target/ppc: Check mask when setting cap_ppc_safe_indirect_branch
  macio: remove macio_init() function
  macio: move setting of CUDA timebase frequency to macio_common_realize()
  mac_newworld: use object link to pass OpenPIC object to macio
  openpic: move OpenPIC state and related definitions to openpic.h
  openpic: move KVM-specific declarations into separate openpic_kvm.h file
  mac_oldworld: use object link to pass heathrow PIC object to macio
  macio: move macio related structures and defines into separate macio.h file
  heathrow: change heathrow_pic_init() to return the heathrow device
  heathrow: convert to trace-events
  heathrow: QOMify heathrow PIC
  ...

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