Use it instead of the libdrm provided amdgpu_drm.h header. I used
the kernel revision from the README to get the header so the
header versions should be consistent.
Tested by removing /usr/include/libdrm/amdgpu_drm.h from my dev-machine.
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4749>