drm/amd/powerplay: add Renoir support for gpu metrics export(V2)

Add Renoir gpu metrics export interface.

V2: use memcpy to make code more compact

Signed-off-by: Evan Quan <evan.quan@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Nirmoy Das <nirmoy.das@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>