Merge branch 'for-next/iommu/default-domains' into for-next/iommu/core

Merge branch 'for-next/iommu/default-domains' into for-next/iommu/core

Support for changing the default domain type for singleton IOMMU groups
via sysfs when the constituent device is not already bound to a device
driver.

* for-next/iommu/default-domains:
  iommu: Fix htmldocs warnings in sysfs-kernel-iommu_groups
  iommu: Document usage of "/sys/kernel/iommu_groups/<grp_id>/type" file
  iommu: Take lock before reading iommu group default domain type
  iommu: Add support to change default domain of an iommu group
  iommu: Move def_domain type check for untrusted device into core