iommufd/selftest: Test IOMMU_HWPT_ALLOC_DIRTY_TRACKING

mainline inclusion
from mainline-v6.7-rc1
commit 266ce58989ba05e2a24460fdbf402d766c2e3870
category: feature
bugzilla: https://gitee.com/openeuler/intel-kernel/issues/I8Y6AM
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?266ce58989ba05e2a24460fdbf402d766c2e3870

--------------------------------

In order to selftest the iommu domain dirty enforcing implement the
mock_domain necessary support and add a new dev_flags to test that the
hwpt_alloc/attach_device fails as expected.

Expand the existing mock_domain fixture with a enforce_dirty test that
exercises the hwpt_alloc and device attachment.

Intel-SIG: 266ce58989ba iommufd/selftest: Test IOMMU_HWPT_ALLOC_DIRTY_TRACKING
Backport IOMMUFD Dirty Tracking

Link: https://lore.kernel.org/r/20231024135109.73787-15-joao.m.martins@oracle.com


Signed-off-by: Joao Martins <joao.m.martins@oracle.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
[ jz: amend commit log ]
Signed-off-by: Jason Zeng <jason.zeng@intel.com>