Merge remote-tracking branch 'remotes/dgibson/tags/ppc-for-2.11-20171204' into staging

Merge remote-tracking branch 'remotes/dgibson/tags/ppc-for-2.11-20171204' into staging

ppc patch queue 2017-12-04

We are, alas, not yet to the bottom of ppc bugs.  This pull request
fixes several more.  I believe they're important enough to include in
2.11. despite the late date.

# gpg: Signature made Mon 04 Dec 2017 03:40:56 GMT
# 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-2.11-20171204:
  spapr: Include "pre-plugged" DIMMS in ram size calculation at reset
  target-ppc: Don't invalidate non-supported msr bits
  pseries: fix TCG migration

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