Closed issue by Johnnynator on void-packages repository

https://github.com/void-linux/void-packages/issues/18299

Description:
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### System

* xuname:  
  *output of ``xuname`` (part of xtools)*
* package:  
  *affected package(s) including the version*

### Expected behavior
No conflicts
### Actual behavior
```
libdrm-devel-2.4.100_1: coERROR: libglvnd-devel-1.3.0_1: file `/usr/lib/pkgconfig/egl.pc' already installed by package rpi-userland-devel-20190501_2.
ERROR: libglvnd-devel-1.3.0_1: file `/usr/lib/pkgconfig/glesv2.pc' already installed by package rpi-userland-devel-20190501_2.
```
### Steps to reproduce the behavior
`./xbps-src pkg EmulationStation-rpi -a armv7l`

`rpi-userland-devel` keeps everything in `/opt/vc/lib` but moves the pkgconfig to `/usr/lib` so they conflict with `libgvlnd` and most likely also always did, nobody just noticed/cared about it.
https://github.com/void-linux/void-packages/blob/e58027461027de6c2b123791fee3f2b2ed8b3c4a/srcpkgs/rpi-userland/template#L57