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/ppx_cstubs/default.nix

@@ -0,0 +1,54 @@
+{ lib
+, fetchFromGitHub
+, buildDunePackage
+, bigarray-compat
+, containers
+, cppo
+, ctypes
+, integers
+, num
+, ppxlib
+, re
+, findlib
+}:
+
+buildDunePackage rec {
+  pname = "ppx_cstubs";
+  version = "0.7.0";
+
+  minimalOCamlVersion = "4.08";
+
+  useDune2 = true;
+
+  src = fetchFromGitHub {
+    owner = "fdopen";
+    repo = "ppx_cstubs";
+    rev = version;
+    sha256 = "sha256-qMmwRWCIfNyhCQYPKLiufnb57sTR3P+WInOqtPDywFs=";
+  };
+
+  nativeBuildInputs = [ cppo findlib ];
+
+  buildInputs = [
+    bigarray-compat
+    containers
+    integers
+    num
+    ppxlib
+    re
+  ];
+
+  propagatedBuildInputs = [
+    ctypes
+  ];
+
+  strictDeps = true;
+
+  meta = with lib; {
+    homepage = "https://github.com/fdopen/ppx_cstubs";
+    changelog = "https://github.com/fdopen/ppx_cstubs/raw/${version}/CHANGES.md";
+    description = "Preprocessor for easier stub generation with ocaml-ctypes";
+    license = licenses.lgpl21Plus;
+    maintainers = [ maintainers.osener ];
+  };
+}