Draft: Fix and update k10temp behaviour for multi-die cpus

On multi-die systems, multiple instances of k10temp are present. To handle this case, we now have one temperature sensor at cpu/all per instance, and only provide temperatures for each individual core, of there is only a single k10temp instance.

This change keeps working configurations of users intact, while enabling users with multi-die systems (ThreadRipper) to get temperature values after all.