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/owl/default.nix

@@ -0,0 +1,26 @@
+{ stdenv
+, buildDunePackage
+, dune-configurator
+, fetchFromGitHub
+, alcotest
+, eigen
+, stdio
+, openblasCompat
+, owl-base
+, npy
+}:
+
+
+buildDunePackage rec {
+  pname = "owl";
+
+  inherit (owl-base) version src meta useDune2;
+
+  checkInputs = [ alcotest ];
+  buildInputs = [ dune-configurator stdio ];
+  propagatedBuildInputs = [
+    eigen openblasCompat owl-base npy
+  ];
+
+  doCheck = !stdenv.isDarwin;  # https://github.com/owlbarn/owl/issues/462
+}