iommu: Detaching pasid by attaching to the blocked_domain

The iommu drivers are on the way to detach pasid by attaching to the blocked
domain. However, this cannot be done in one shot. During the transition, iommu
core would select between the remove_dev_pasid op and the blocked domain.

Suggested-by: Kevin Tian <kevin.tian@intel.com>
Suggested-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Reviewed-by: Vasant Hegde <vasant.hegde@amd.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Yi Liu <yi.l.liu@intel.com>
Link: https://lore.kernel.org/r/20241204122928.11987-4-yi.l.liu@intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>

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