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/gocd-server.nix

@@ -0,0 +1,28 @@
+# verifies:
+#   1. GoCD server starts
+#   2. GoCD server responds
+
+import ./make-test-python.nix ({ pkgs, ...} :
+
+{
+  name = "gocd-server";
+  meta = with pkgs.lib.maintainers; {
+    maintainers = [ swarren83 ];
+  };
+
+  nodes = {
+    server =
+      { ... }:
+      {
+        virtualisation.memorySize = 2046;
+        services.gocd-server.enable = true;
+      };
+  };
+
+  testScript = ''
+    server.start()
+    server.wait_for_unit("gocd-server")
+    server.wait_for_open_port(8153)
+    server.wait_until_succeeds("curl -s -f localhost:8153/go")
+  '';
+})