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/fluidd.nix

@@ -0,0 +1,21 @@
+import ./make-test-python.nix ({ lib, ... }:
+
+with lib;
+
+{
+  name = "fluidd";
+  meta.maintainers = with maintainers; [ vtuan10 ];
+
+  nodes.machine = { pkgs, ... }: {
+    services.fluidd = {
+      enable = true;
+    };
+  };
+
+  testScript = ''
+    machine.start()
+    machine.wait_for_unit("nginx.service")
+    machine.wait_for_open_port(80)
+    machine.succeed("curl -sSfL http://localhost/ | grep 'fluidd'")
+  '';
+})