Revert "gpu driver: back to original simple gov, but with lower idle freq", francos solution is actually faster, but with a different method to calculate the average load.

This reverts commit b2a089c4565349171b8d49f30a5bc9a27642726a.
hotplug: removed first and fourth load, renamed second to first. touch boosted cores are now save from shutdown.
hotplug: removed struct, because I'm lazy
hotplug: removed unnecessary code, reduced cores on wakeup from 4 to 2 with active touchboost