drm/amd/pp: Store stable Pstate clocks

User can use to calculate profiling ratios when
set UMD Pstate.

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
5 files changed