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/ocamlgraph/gtk.nix

@@ -0,0 +1,12 @@
+{ buildDunePackage, lablgtk, ocamlgraph, stdlib-shims, ... }:
+
+buildDunePackage rec {
+  pname = "ocamlgraph_gtk";
+  inherit (ocamlgraph) version src useDune2 meta;
+
+  propagatedBuildInputs = [
+    lablgtk
+    ocamlgraph
+    stdlib-shims
+  ];
+}