Merge remote-tracking branch 'remotes/dgibson/tags/ppc-for-2.7-20160701' into staging

ppc patch queue 2016-07-01

Here's the current ppc patch queue.  This is a fairly large batch,
containing:
    * A number of further preliminary patches towards full hypervisor
      mode emulation
    * Some further fixes / cleanups for the recently merged device_add
      based CPU hotplug
    * Preliminary patches towards supporting a native (rather than
      paravirtualized) XICS device.  This will be needed to emulate a
      physical Power machine, including hypervisor capabilities
    * Assorted bug fixes

# gpg: Signature made Fri 01 Jul 2016 06:56:35 BST
# gpg:                using RSA key 0x6C38CACA20D9B392
# 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: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg:          It is not certain that the signature belongs to the owner.
# Primary key fingerprint: 75F4 6586 AE61 A66C C44E  87DC 6C38 CACA 20D9 B392

* remotes/dgibson/tags/ppc-for-2.7-20160701: (23 commits)
  qmp: fix spapr example of query-hotpluggable-cpus
  spapr: drop duplicate variable in spapr_core_release()
  spapr: do proper error propagation in spapr_cpu_core_realize_child()
  spapr: drop reference on child object during core realization
  spapr: Restore support for 970MP and POWER8NVL CPU cores
  target-ppc: gen_pause for instructions: yield, mdoio, mdoom, miso
  ppc/xics: Replace "icp" with "xics" in most places
  ppc/xics: Implement H_IPOLL using an accessor
  ppc/xics: Move SPAPR specific code to a separate file
  ppc/xics: Rename existing xics to xics_spapr
  ppc: Fix 64K pages support in full emulation
  target-ppc: Eliminate redundant and incorrect function booke206_page_size_to_tlb
  spapr: Restore support for older PowerPC CPU cores
  spapr: fix write-past-end-of-array error in cpu core device init code
  hw/ppc/spapr: Add some missing hcall function set strings
  ppc: Print HSRR0/HSRR1 in "info registers"
  ppc: LPCR is a HV resource
  ppc: Initial HDEC support
  ppc: Enforce setting MSR:EE,IR and DR when MSR:PR is set
  ppc: Fix conditions for delivering external interrupts to a guest
  ...

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