drm/amd/powerplay: add power profile support for Vega10 (v2)

This implements the workload specific interface of optimized
compute power profile for Vega10.

v2: squash in fix (Tom)

Signed-off-by: Eric Huang <JinHuiEric.Huang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>