[Bug 258947] multimedia/libva: va_openDriver() returns 2

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=258947

--- Comment #6 from Dan Kotowski <[email protected]> ---
We can reject this bug.

In a moment of clarity, I realized and learned a few things:

1. I had not properly added the necessary users to the `video` group.

2. In order to use libva with DRM in a jail, not only must you expose the drm
and dri devs to the jail, but also the pci device, like so:

```
add path 'dri*' unhide
add path 'dri/*' unhide
add path 'drm*' unhide
add path 'drm/*' unhide
add path 'pci' unhide
```

It seems this is to satisfy the `drm_get_pci_id_for_fd` method here:
https://github.com/mesa3d/mesa/blob/mesa-21.1.5/src/loader/loader.c#L388-L407

I'll leave it to the rest of you to decide whether this 2nd point should be
added to libva or mesa-gallium-va's post-install messages. There's already
something there for Intel iGPUs, perhaps we should have something for PCI
DRM-based drivers too (eg amdgpu).

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