Capped and Uncapped workload types are supported, each workload type
has different performance thresholds and pstate conditions.

* capped mode is used by power centric workload
* uncapped mode is used by perf centric workload
Acked-by: Kenneth Feng <kenneth.feng@amd.com>
Reviewed-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Perry Yuan <perry.yuan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>