[PATCH v2 03/10] iommu: Add generic_single_device_group()

[Tian, Kevin]

> From: Jason Gunthorpe <jgg at nvidia.com>
> Sent: Tuesday, August 1, 2023 1:50 AM
> 
> This implements the common pattern seen in drivers of a single
> iommu_group
> for the entire iommu driver instance. Implement this in core code so the
> drivers that want this can select it from their ops.
> 
> Reviewed-by: Lu Baolu <baolu.lu at linux.intel.com>
> Signed-off-by: Jason Gunthorpe <jgg at nvidia.com>

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