Merge remote-tracking branch 'remotes/dgibson/tags/ppc-for-4.0-20190319' into staging

Merge remote-tracking branch 'remotes/dgibson/tags/ppc-for-4.0-20190319' into staging

ppc patch queue for 2019-03-19

This is a small set, it has a number of fixes and a couple of minor
cleanups to go in for the hard freeze.

# gpg: Signature made Tue 19 Mar 2019 10:05:48 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-4.0-20190319:
  spapr: Remove NULL checks on error_propagate() calls
  ppc/xics/spapr: Fix H_IPOLL implementation
  ppc/pnv: Fix variable size in pnv_psi_power9_irq_set()
  ppc/pnv: Use local_err variable in pnv_chip_power9_intc_create()
  MAINTAINERS: PPC: add a PowerNV machine entry
  ppc/pnv: update skiboot to commit 261ca8e779e5.
  spapr: Correctly set LPCR[GTSE] in H_REGISTER_PROCESS_TABLE

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