Merge remote-tracking branch 'remotes/dgibson/tags/ppc-for-5.0-20200221' into staging

ppc patch queue 2020-02-21

Here's the next patch of ppc target patches.  Highlights are:
  * Some fixes for CAS / unplug interactions
  * Remove some leaks of device trees
  * Some fixes for the PHB3 and PHB4 devices
  * Support for NVDIMMs on the pseries machine type
  * Assorted other fixes and cleanups

# gpg: Signature made Fri 21 Feb 2020 03:35:40 GMT
# gpg:                using RSA key 75F46586AE61A66CC44E87DC6C38CACA20D9B392
# gpg: Good signature from "David Gibson <david@gibson.dropbear.id.au>" [full]
# gpg:                 aka "David Gibson (Red Hat) <dgibson@redhat.com>" [full]
# gpg:                 aka "David Gibson (ozlabs.org) <dgibson@ozlabs.org>" [full]
# gpg:                 aka "David Gibson (kernel.org) <dwg@kernel.org>" [unknown]
# Primary key fingerprint: 75F4 6586 AE61 A66C C44E  87DC 6C38 CACA 20D9 B392

* remotes/dgibson/tags/ppc-for-5.0-20200221:
  hw/ppc/virtex_ml507:fix leak of fdevice tree blob
  spapr: Fix handling of unplugged devices during CAS and migration
  spapr: Don't use spapr_drc_needed() in CAS code
  ppc: free 'fdt' after reset the machine
  target/ppc/cpu.h: Clean up comments in the struct CPUPPCState definition
  target/ppc/cpu.h: Move fpu related members closer in cpu env
  target/ppc: Fix typo in comments
  spapr: Allow changing offset for -kernel image
  pnv/phb3: Add missing break statement
  pnv/phb4: Fix error path in pnv_pec_realize()
  pnv/phb3: Convert 1u to 1ull
  target/ppc/cpu.h: Remove duplicate includes
  spapr: Add Hcalls to support PAPR NVDIMM device
  spapr: Add NVDIMM device support
  nvdimm: add uuid property to nvdimm
  mem: move nvdimm_device_list to utilities
  ppc: function to setup latest class options
  ppc/pnv: Fix PCI_EXPRESS dependency
  qtest: Fix rtas dependencies
  spapr/rtas: Print message from "ibm,os-term"

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