drm/amdgpu: add cgls for beige_goby

Enable cgls to improve the runtime power efficiency.
Signed-off-by: Tao Zhou <tao.zhou1@amd.com>
Reviewed-by: Jack Gui <Jack.Gui@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -1280,6 +1280,7 @@ static int nv_common_early_init(void *handle)
 	case CHIP_BEIGE_GOBY:
 		adev->cg_flags = AMD_CG_SUPPORT_GFX_MGCG |
 			AMD_CG_SUPPORT_GFX_CGCG |
+			AMD_CG_SUPPORT_GFX_CGLS |
 			AMD_CG_SUPPORT_GFX_3D_CGCG |
 			AMD_CG_SUPPORT_MC_MGCG |
 			AMD_CG_SUPPORT_MC_LS |