Merge remote-tracking branch 'remotes/dgibson/tags/ppc-for-2.10-20170809' into staging

Merge remote-tracking branch 'remotes/dgibson/tags/ppc-for-2.10-20170809' into staging

ppc patch queue 2017-08-09

This series contains a number of bugfixes for ppc and related
machines, for the qemu-2.10.release.  Some are true regressions,
others are serious enough and non-invasive enough to fix that it's
worth putting in 2.10 this late.

# gpg: Signature made Wed 09 Aug 2017 07:31:33 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:                 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-2.10-20170809:
  spapr: Fix bug in h_signal_sys_reset()
  spapr_drc: abort if object_property_add_child() fails
  target/ppc: Add stub implementation of the PSSCR
  target/ppc: Implement TIDR
  ppc: fix double-free in cpu_post_load()
  booke206: fix MAS update on tlb miss

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