Support more GFX clockgating features(3D_CGCG, 3D_CGLS, MGCG,
FGCG and PERF_CLK).
Signed-off-by: NEvan Quan <evan.quan@amd.com>
Reviewed-by: NLikun Gao <Likun.Gao@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>