tslib: add updateScript

pkgs/by-name/ts/tslib/package.nix

@@ -3,6 +3,7 @@
   stdenv,
   fetchFromGitHub,
   cmake,
+  nix-update-script,
 }:
 
 stdenv.mkDerivation (finalAttrs: {
@@ -18,6 +19,8 @@ stdenv.mkDerivation (finalAttrs: {
 
   nativeBuildInputs = [ cmake ];
 
+  passthru.updateScript = nix-update-script { };
+
   meta = {
     description = "Touchscreen access library";
     homepage = "http://www.tslib.org/";