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>

pkgs/development/ocaml-modules/faraday/async.nix

@@ -0,0 +1,14 @@
+{ buildDunePackage, faraday, core, async }:
+
+buildDunePackage rec {
+  pname = "faraday-async";
+  inherit (faraday) version src useDune2;
+
+  minimumOCamlVersion = "4.08";
+
+  propagatedBuildInputs = [ faraday core async ];
+
+  meta = faraday.meta // {
+    description = "Async support for Faraday";
+  };
+}