drm/amdgpu: enable ATHUB clock gatting

Enable ATHUB clock gatting set in Renoir series.
Signed-off-by: Prike.Liang <Prike.Liang@amd.com>
Reviewed-by: Evan Quan <evan.quan@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/athub_v1_0.c

@@ -73,6 +73,7 @@ int athub_v1_0_set_clockgating(struct amdgpu_device *adev,
 	case CHIP_VEGA12:
 	case CHIP_VEGA20:
 	case CHIP_RAVEN:
+	case CHIP_RENOIR:
 		athub_update_medium_grain_clock_gating(adev,
 				state == AMD_CG_STATE_GATE);
 		athub_update_medium_grain_light_sleep(adev,