Comment 24 for bug 1815889

Thanks Daniel and MarcAndre for chiming in here.
Atfer thinking more about it I agree to Daniel that actually mesa should honor and stick with its affinity assignment.

For documentation purpose: the solution proposed on the ML is at https://lists.freedesktop.org/archives/mesa-dev/2019-February/215926.html
I also added a bug tracker to the fredesktop bug as task.