Merge remote-tracking branch 'remotes/dgibson/tags/ppc-for-2.7-20160614' into staging

ppc patch queue for 2016-06-14

Latest patch queue for ppc.
    * Allow qemu to support a generic architecture 2.07 (POWER8-era)
      compatibility mode.  This is useful for guests which are POWER8
      aware, but don't know about the specific POWER8 variant that
      qemu (and/or KVM) is emulating. (Thomas Huth)
    * Fix a bug where macio wasn't removing DMA mappings (Mark Cave-Ayland)
    * Add a workaround for Linux guest's miscalculation of maximum
      memory address (including hotplugged memory), which could break
      when hotplug memory was combined with VFIO.  The previous
      approach was technically correct by spec, but differed from
      PowerVM's behaviour enough to trip a guest kernel bug.  This
      works around the bug, while remaining correct-to-spec. (Bharata Rao)

# gpg: Signature made Tue 14 Jun 2016 06:53:58 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-2.7-20160614:
  spapr: Ensure all LMBs are represented in ibm,dynamic-memory
  macio: call dma_memory_unmap() at the end of each DMA transfer
  Add PowerPC AT_HWCAP2 definitions
  ppc: Add PowerISA 2.07 compatibility mode
  ppc: Improve PCR bit selection in ppc_set_compat()
  ppc: Provide function to get CPU class of the host CPU
  ppc: Split pcr_mask settings into supported bits and the register mask
  ppc/spapr: Refactor h_client_architecture_support() CPU parsing code

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

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