Pull iommu fixes from Will Deacon:
 "Two straightforward vt-d fixes:

   - Fix boot when intel iommu initialisation fails under TXT (tboot)

   - Fix intel iommu compilation error when DMAR is enabled without ATS

  and temporarily update IOMMU MAINTAINERs entry"

* tag 'iommu-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  MAINTAINERS: Temporarily add myself to the IOMMU entry
  iommu/vt-d: Fix compile error with CONFIG_PCI_ATS not set
  iommu/vt-d: Avoid panic if iommu init fails in tboot system