New issue by ParzivalWolfram on void-packages repository

https://github.com/void-linux/void-packages/issues/32293

Description:
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### System

* xuname:  
  Void 5.12.19_1 x86_64 uptodate rrrmFFFFF
* package:  
  xorg-server-1.20.13_1
  xf86-video-amdgpu-19.1.0_2
  mesa-dri-21.1.6_1

### Expected behavior
Xorg starts as normal on boot
### Actual behavior
Xorg starts and dies in an infinite loop due to lack of `libLLVM-7.so.1` as seen in multiple lines as follows:

`MESA-LOADER: failed to open radeonsi: libLLVM-7.so.1: cannot open shared object file: No such file or directory (search paths /usr/lib64/dri)`

(with `radeonsi`, `kms_swrast` and `swrast` drivers all failing to load in the same manner) and an assertion error as follows: 

`Xorg: /usr/include/xorg/privates.h:121: dixGetPrivateAddr: Assertion 'key->initialized' failed.`

### Steps to reproduce the behavior
- Install Void with any DE that includes Xorg
- Install `xf86-video-amdgpu`
- Reboot