[Intel-gfx] [PATCH v6 23/24] vfio: Compile group optionally

[Tian, Kevin]

> From: Liu, Yi L <yi.l.liu at intel.com>
> Sent: Wednesday, March 8, 2023 9:29 PM
> 
> group code is not needed for vfio device cdev, so with vfio device cdev
> introduced, the group infrastructures can be compiled out if only cdev
> is needed.
> 
> Signed-off-by: Yi Liu <yi.l.liu at intel.com>

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