iommu/arm-smmu-v3: Add support for dirty tracking in domain alloc

This provides all the infrastructure to enable dirty tracking if the
hardware has the capability and domain alloc request for it.

Also, add a device_iommu_capable() check in iommufd core for
IOMMU_CAP_DIRTY_TRACKING before we request a user domain with dirty
tracking support.

Please note, we still report no support for IOMMU_CAP_DIRTY_TRACKING
as it will finally be enabled in a subsequent patch.

Signed-off-by: Joao Martins <[email protected]>
Reviewed-by: Ryan Roberts <[email protected]>
Reviewed-by: Jason Gunthorpe <[email protected]>
Reviewed-by: Nicolin Chen <[email protected]>
Reviewed-by: Kevin Tian <[email protected]>
Signed-off-by: Shameer Kolothum <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Will Deacon <[email protected]>

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