Merge branch 'kvm-ppc-fixes' of paulus/powerpc into topic/ppc-kvm

Some commits we'd like to share between the powerpc and kvm-ppc tree for
next have dependencies on commits that went into 4.19 via the
kvm-ppc-fixes branch and weren't merged before 4.19-rc3, which is our
base commit.

So merge the kvm-ppc-fixes branch into topic/ppc-kvm.