uboot: (firmwareOdroidC2/C4) don't invoke patch tool, use patches = [] instead

https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/setup.sh#L948
this can do it nicely.

Signed-off-by: Anton Arapov <anton@deadbeef.mx>

nixos/tests/isso.nix

@@ -0,0 +1,30 @@
+import ./make-test-python.nix ({ pkgs, ... }: {
+  name = "isso";
+  meta = with pkgs.lib.maintainers; {
+    maintainers = [ asbachb ];
+  };
+
+  nodes.machine = { config, pkgs, ... }: {
+    services.isso = {
+      enable = true;
+      settings = {
+        general = {
+          dbpath = "/var/lib/isso/comments.db";
+          host = "http://localhost";
+        };
+      };
+    };
+  };
+
+  testScript = let
+    port = 8080;
+  in
+  ''
+    machine.wait_for_unit("isso.service")
+
+    machine.wait_for_open_port("${toString port}")
+
+    machine.succeed("curl --fail http://localhost:${toString port}/?uri")
+    machine.succeed("curl --fail http://localhost:${toString port}/js/embed.min.js")
+  '';
+})