drm/amdgpu: enable athub/mmhub PG for beige_goby

Enable athub/mmhub power gating for beige_goby.
Signed-off-by: Tao Zhou <tao.zhou1@amd.com>
Reviewed-by: Jiansong Chen <Jiansong.Chen@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/nv.c

@@ -1282,7 +1282,9 @@ static int nv_common_early_init(void *handle)
 			AMD_CG_SUPPORT_GFX_CGCG |
 			AMD_CG_SUPPORT_GFX_3D_CGCG;
 		adev->pg_flags = AMD_PG_SUPPORT_VCN |
-			AMD_PG_SUPPORT_VCN_DPG;
+			AMD_PG_SUPPORT_VCN_DPG |
+			AMD_PG_SUPPORT_ATHUB |
+			AMD_PG_SUPPORT_MMHUB;
 		adev->external_rev_id = adev->rev_id + 0x46;
 		break;
 	default: