linuxPackages.xpadneo: add updateScript

pkgs/os-specific/linux/xpadneo/default.nix

@@ -4,6 +4,7 @@
 , kernel
 , bluez
 , nixosTests
+, nix-update-script
 }:
 
 stdenv.mkDerivation (finalAttrs: {
@@ -39,6 +40,8 @@ stdenv.mkDerivation (finalAttrs: {
     xpadneo = nixosTests.xpadneo;
   };
 
+  passthru.updateScript = nix-update-script { };
+
   meta = with lib; {
     description = "Advanced Linux driver for Xbox One wireless controllers";
     homepage = "https://atar-axis.github.io/xpadneo";