iommu/amd: Enable device ATS/PASID/PRI capabilities independently

Introduce helper functions to enable/disable device ATS/PASID/PRI
capabilities independently along with the new pasid_enabled and
pri_enabled variables in struct iommu_dev_data to keep track,
which allows attach_device() and detach_device() to be simplified.

Co-developed-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Signed-off-by: Vasant Hegde <vasant.hegde@amd.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Jerry Snitselaar <jsnitsel@redhat.com>
Link: https://lore.kernel.org/r/20230921092147.5930-14-vasant.hegde@amd.com


Signed-off-by: Joerg Roedel <jroedel@suse.de>