Bump to amdgpu-19.30-855429
Fix OS detection
Remove DRIVER_HAVE_IRQ for DRM >= 5.1
This repository contains Arch Linux PKGBUILD and patches to make AMDGPU DKMS 19.30 builds on Linux 5.1 and 5.2. You should not really use this unless you're using Navi cards (e.g. Radeon RX 5700).
This package only provides the DKMS, you will need OpenGL and other libraries, e.g. amdgpu-pro packages.