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/ocf/default.nix

@@ -0,0 +1,24 @@
+{ lib, buildDunePackage, fetchFromGitLab, yojson }:
+
+buildDunePackage rec {
+  pname = "ocf";
+  version = "0.8.0";
+  useDune2 = true;
+  minimalOCamlVersion = "4.03";
+  src = fetchFromGitLab {
+    domain = "framagit.org";
+    owner = "zoggy";
+    repo = "ocf";
+    rev = version;
+    sha256 = "sha256:00ap3q5yjqmpk87lxqv1j2wkc7583ynhjr1jjrfn9r0j2h9pfd60";
+  };
+
+  propagatedBuildInputs = [ yojson ];
+
+  meta = with lib; {
+    description = "OCaml library to read and write configuration options in JSON syntax";
+    homepage = "https://zoggy.frama.io/ocf/";
+    license = licenses.lgpl3;
+    maintainers = with maintainers; [ regnat ];
+  };
+}

pkgs/development/ocaml-modules/ocf/ppx.nix

@@ -0,0 +1,14 @@
+{ buildDunePackage, ocf, ppxlib }:
+
+buildDunePackage {
+  pname = "ocf_ppx";
+  minimalOCamlVersion = "4.11";
+
+  inherit (ocf) src version useDune2;
+
+  buildInputs = [ ppxlib ocf ];
+
+  meta = ocf.meta // {
+    description = "Preprocessor for Ocf library";
+  };
+}