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-apps/nifi.nix

@@ -0,0 +1,30 @@
+import ../make-test-python.nix ({pkgs, ...}:
+{
+  name = "nifi";
+  meta.maintainers = with pkgs.lib.maintainers; [ izorkin ];
+
+  nodes = {
+    nifi = { pkgs, ... }: {
+      virtualisation = {
+        memorySize = 2048;
+        diskSize = 4096;
+      };
+      services.nifi = {
+        enable = true;
+        enableHTTPS = false;
+      };
+    };
+  };
+
+  testScript = ''
+    nifi.start()
+
+    nifi.wait_for_unit("nifi.service")
+    nifi.wait_for_open_port(8080)
+
+    # Check if NiFi is running
+    nifi.succeed("curl --fail http://127.0.0.1:8080/nifi/login 2> /dev/null | grep 'NiFi Login'")
+
+    nifi.shutdown()
+  '';
+})