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/bitv/default.nix

@@ -0,0 +1,31 @@
+{ stdenv, lib, fetchFromGitHub, autoreconfHook, which, ocaml, findlib }:
+
+if lib.versionOlder ocaml.version "4.02"
+then throw "bitv is not available for OCaml ${ocaml.version}"
+else
+
+stdenv.mkDerivation rec {
+  pname = "ocaml${ocaml.version}-bitv";
+  version = "1.3";
+
+  src = fetchFromGitHub {
+    owner = "backtracking";
+    repo = "bitv";
+    rev = version;
+    sha256 = "sha256-sZwq6c10hBBS9tGvKlWD9GE3JBrZPByfDrXE6xIPcG4=";
+  };
+
+  nativeBuildInputs = [ autoreconfHook which ocaml findlib ];
+
+  strictDeps = true;
+
+  createFindlibDestdir = true;
+
+  meta = {
+    description = "A bit vector library for OCaml";
+    license = lib.licenses.lgpl21;
+    homepage = "https://github.com/backtracking/bitv";
+    maintainers = [ lib.maintainers.vbgl ];
+    inherit (ocaml.meta) platforms;
+  };
+}