AMD P-State Preferred Core Support For Linux Tried A 13th Time

One of the features sadly not having made it in time for the Linux v6.8 kernel merge window is the AMD P-State Preferred Core support. This is about being able to properly communicate to the kernel and scheduler about "preferred cores" such as cases of some CPU cores having higher maximum frequencies or better performance characteristics than others. This is becoming more important with AMD Ryzen processors beginning to see a combination of Zen 4 and Zen 4C cores and other cases like AMD 3D V-Cache enabled processors where some cores would be preferred over others for performance sensitive work...