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/web-servers/agate.nix

@@ -0,0 +1,29 @@
+import ../make-test-python.nix (
+  { pkgs, lib, ... }:
+  {
+    name = "agate";
+    meta = with lib.maintainers; { maintainers = [ jk ]; };
+
+    nodes = {
+      geminiserver = { pkgs, ... }: {
+        services.agate = {
+          enable = true;
+          hostnames = [ "localhost" ];
+          contentDir = pkgs.writeTextDir "index.gmi" ''
+            # Hello NixOS!
+          '';
+        };
+      };
+    };
+
+    testScript = { nodes, ... }: ''
+      geminiserver.wait_for_unit("agate")
+      geminiserver.wait_for_open_port(1965)
+
+      with subtest("check is serving over gemini"):
+        response = geminiserver.succeed("${pkgs.gmni}/bin/gmni -j once -i -N gemini://localhost:1965")
+        print(response)
+        assert "Hello NixOS!" in response
+    '';
+  }
+)