Merge branch 'remotes/lorenzo/pci/xgene'

- Use bitmap ops for MSI allocator (Christophe JAILLET)

- Fix IB window setup, which was broken by the fact that IB resources are
  now sorted in address order instead of DT dma-ranges order (Rob Herring)

* remotes/lorenzo/pci/xgene:
  PCI: xgene: Fix IB window setup
  PCI: xgene-msi: Use bitmap_zalloc() when applicable