Merge remote-tracking branch 'remotes/dgibson/tags/ppc-for-2.7-20160815' into staging

Merge remote-tracking branch 'remotes/dgibson/tags/ppc-for-2.7-20160815' into staging

ppc patch queue for 2016-08-15

Just a single patch here, I hope this is the last ppc / spapr fix to
squeeze into qemu-2.7.

# gpg: Signature made Mon 15 Aug 2016 07:46:36 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-2.7-20160815:
  ppc: parse cpu features once

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