Consider using multiple "drivers" for CPU P-State support

After discussions with @jwrdegoede and @markpearson, the expectations were that platform_profile would only control the system/EC, and never touch the CPU P-State knobs, so something like Lenovo's platform_profile driver would need to be combined with power-profiles-daemon's intel-pstate driver to achieve full control, on Intel machines.

@superm1, would the expectation be that the new AMD P-State EPP driver can be combined without conflicts with the AMD CnQF driver?