Pull iommu driver directory structure cleanup from Joerg Roedel:
 "Move the Intel and AMD IOMMU drivers into their own subdirectory.

  Both drivers consist of several files by now and giving them their own
  directory unclutters the IOMMU top-level directory a bit"

* tag 'iommu-drivers-move-v5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
  iommu/vt-d: Move Intel IOMMU driver into subdirectory
  iommu/amd: Move AMD IOMMU driver into subdirectory