Merge remote-tracking branch 'remotes/dgibson/tags/ppc-for-2.7-20160718' into staging

ppc patch queue 2016-07-18

Here's what ought to be the final ppc pull request before the 2.7 hard
freeze.  This set contains a rework of the DBDMA device for Mac
platforms, and some assorted cleanups and bugfixes.

# gpg: Signature made Mon 18 Jul 2016 05:35:27 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-2.7-20160718:
  ppc: Yet another fix for the huge page support detection mechanism
  target-ppc: fix left shift overflow in hpte_page_shift
  ppc/mmu-hash64: Remove duplicated #include statement
  ppc: abort if compat property contains an unknown value
  spapr: Ensure CPU cores are added contiguously and removed in LIFO order
  vfio/spapr: Remove stale ioctl() call
  ppc: Fix support for odd MSR combinations
  dbdma: reset io->processing flag for unassigned DBDMA channel rw accesses
  dbdma: set FLUSH bit upon reception of flush command for unassigned DBDMA channels
  dbdma: fix load_word/store_word value endianness
  dbdma: fix endian of DBDMA_CMDPTR_LO during branch
  dbdma: add per-channel debugging enabled via DEBUG_DBDMA_CHANMASK
  dbdma: always define DBDMA_DPRINTF and enable debug with DEBUG_DBDMA
  spapr: fix core unplug crash

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