[PATCH v5 11/13] iommufd/selftest: Add IOMMU_VIOMMU_ALLOC test coverage

[Tian, Kevin]

> From: Nicolin Chen <nicolinc at nvidia.com>
> Sent: Saturday, October 26, 2024 7:50 AM
> 
> Add a new iommufd_viommu FIXTURE and setup it up with a vIOMMU object.
> 
> Any new vIOMMU feature will be added as a TEST_F under that.
> 
> Signed-off-by: Nicolin Chen <nicolinc at nvidia.com>

Reviewed-by: Kevin Tian <kevin.tian at intel.com>