Now the new ucmd-based object allocator eases the finalize/abort routine,
apply this to all existing allocators that aren't protected by any lock.
Upgrade the for-driver vIOMMU alloctor too, and pass down to all existing
viommu_alloc op accordingly.
Note that __iommufd_object_alloc_ucmd() builds in some static tests that
cover both static_asserts in the iommufd_viommu_alloc(). Thus drop them.
Suggested-by: Jason Gunthorpe<jgg@xxxxxxxxxx>
Reviewed-by: Jason Gunthorpe<jgg@xxxxxxxxxx>
Signed-off-by: Nicolin Chen<nicolinc@xxxxxxxxxx>