Merge remote-tracking branch 'remotes/dgibson/tags/ppc-for-2.7-20160527' into staging

Merge remote-tracking branch 'remotes/dgibson/tags/ppc-for-2.7-20160527' into staging

ppc patch queue for 2016-05-27 (first pull for qemu-2.7)

I'm back from holidays now, and have re-collated the ppc patch queue.
This is a first pull request against the qemu-2.7 branch, mostly
consisting of patches which were posted before the 2.6 freeze, but
weren't suitable for late inclusion in the 2.6 branch.

 * Assorted bugfixes and cleanups
 * Some preliminary patches towards dynamic DMA windows and CPU hotplug
 * Significant performance impovement for the spapr-llan device
 * Added myself to MAINTAINERS for ppc (overdue)

# gpg: Signature made Fri 27 May 2016 04:04:15 BST using RSA key ID 20D9B392
# 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-2.7-20160527:
  MAINTAINERS: Add David Gibson as ppc maintainer
  spapr_iommu: Move table allocation to helpers
  spapr_iommu: Finish renaming vfio_accel to need_vfio
  spapr_pci: Use correct DMA LIOBN when composing the device tree
  spapr: ensure device trees are always associated with DRC
  PPC/KVM: early validation of vcpu id
  Added negative check for get_image_size()
  hw/net/spapr_llan: Provide counter with dropped rx frames to the guest
  hw/net/spapr_llan: Delay flushing of the RX queue while adding new RX buffers
  target-ppc: Cleanups to rldinm, rldnm, rldimi
  target-ppc: Use 32-bit rotate instead of deposit + 64-bit rotate
  target-ppc: Use movcond in isel
  target-ppc: Correct KVM synchronization for ppc_hash64_set_external_hpt()

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