Merge branch 'fixes' into next

There's a few important fixes in our fixes branch, in particular the
pgd/pud_present() one, so merge it now.

diff --cc arch/powerpc/include/asm/book3s/64/pgtable.h
Simple merge

diff --cc arch/powerpc/platforms/powernv/npu-dma.c
Simple merge

diff --cc arch/powerpc/platforms/powernv/pci-ioda.c
Simple merge