Merge remote-tracking branch 'dgibson/tags/ppc-for-2.8-20161115' into staging

ppc patch queue 2016-11-15

Latest set of ppc and spapr related patches.  Highlights are:
   * More POWER9 instructions
   * Fix some subtle outstanding bugs
   * Add some extra tests

One patch affects bitops.h, so isn't strictly ppc related.

# gpg: Signature made Tue 15 Nov 2016 02:46:48 AM GMT
# gpg:                using RSA key 0x6C38CACA20D9B392
# gpg: Good signature from "David Gibson <david@gibson.dropbear.id.au>"
# gpg:                 aka "David Gibson (kernel.org) <dwg@kernel.org>"
# gpg:                 aka "David Gibson (Red Hat) <dgibson@redhat.com>"
# gpg:                 aka "David Gibson (ozlabs.org) <dgibson@ozlabs.org>"
# Primary key fingerprint: 75F4 6586 AE61 A66C C44E  87DC 6C38 CACA 20D9 B392

* dgibson/tags/ppc-for-2.8-20161115:
  boot-serial-test: Add a test for the powernv machine
  tests: add XSCOM tests for the PowerNV machine
  ppc/pnv: Fix fatal bug on 32-bit hosts
  ppc/pnv: fix xscom address translation for POWER9
  ppc/pnv: add a 'xscom_core_base' field to PnvChipClass
  spapr-vty: Fix bad assert() statement
  FU exceptions should carry a cause (IC)
  spapr: Fix migration of PCI host bridges from qemu-2.7
  target-ppc: Implement bcdctz. instruction
  target-ppc: Implement bcdcfz. instruction
  target-ppc: Implement bcdctn. instruction
  target-ppc: Implement bcdcfn. instruction
  ppc: Remove some stub POWER6 models
  ppc/pnv: fix compile breakage on old gcc
  powernv: CPU compatibility modes don't make sense for powernv
  target-ppc: add vprtyb[w/d/q] instructions
  target-ppc: add vrldnm and vrlwnm instructions
  target-ppc: add vrldnmi and vrlwmi instructions
  bitops: fix rol/ror when shift is zero

Message-id: 1479178144-28153-1-git-send-email-david@gibson.dropbear.id.au
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>