ppc patch queue 2017-09-08 This is the first batch of ppc related patches for qemu-2.11, and it's accumulated quite a few things. Includes: * A cleanup to handling of ppc cpu models from Igor * First parts of fixes to handling of guest vs. host SMT modes from Sam Bobroff * Preliminary patches towards supporting the Sam460 board from Balaton Zoltan * Several fixes for hotplug logic * Assorted other fixes and cleanups