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/grocy.nix

@@ -0,0 +1,47 @@
+import ./make-test-python.nix ({ pkgs, ... }: {
+  name = "grocy";
+  meta = with pkgs.lib.maintainers; {
+    maintainers = [ ma27 ];
+  };
+
+  nodes.machine = { pkgs, ... }: {
+    services.grocy = {
+      enable = true;
+      hostName = "localhost";
+      nginx.enableSSL = false;
+    };
+    environment.systemPackages = [ pkgs.jq ];
+  };
+
+  testScript = ''
+    machine.start()
+    machine.wait_for_open_port(80)
+    machine.wait_for_unit("multi-user.target")
+
+    machine.succeed("curl -sSf http://localhost")
+
+    machine.succeed(
+        "curl -c cookies -sSf -X POST http://localhost/login -d 'username=admin&password=admin'"
+    )
+
+    cookie = machine.succeed(
+        "grep -v '^#' cookies | awk '{ print $7 }' | sed -e '/^$/d' | perl -pe 'chomp'"
+    )
+
+    machine.succeed(
+        f"curl -sSf -X POST http://localhost/api/objects/tasks -b 'grocy_session={cookie}' "
+        + '-d \'{"assigned_to_user_id":1,"name":"Test Task","due_date":"1970-01-01"}\'''
+        + " --header 'Content-Type: application/json'"
+    )
+
+    task_name = machine.succeed(
+        f"curl -sSf http://localhost/api/tasks -b 'grocy_session={cookie}' --header 'Accept: application/json' | jq '.[].name' | xargs echo | perl -pe 'chomp'"
+    )
+
+    assert task_name == "Test Task"
+
+    machine.succeed("curl -sSI http://localhost/api/tasks 2>&1 | grep '401 Unauthorized'")
+
+    machine.shutdown()
+  '';
+})