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/ffmpeg/default.nix

@@ -0,0 +1,36 @@
+{ lib, buildDunePackage, fetchFromGitHub, callPackage
+, ffmpeg-base ? callPackage ./base.nix { }
+, ffmpeg-avutil
+, ffmpeg-avcodec
+, ffmpeg-avfilter
+, ffmpeg-swscale
+, ffmpeg-swresample
+, ffmpeg-av
+, ffmpeg-avdevice
+}:
+
+buildDunePackage {
+  pname = "ffmpeg";
+
+  minimalOCamlVersion = "4.08";
+
+  inherit (ffmpeg-base) version src useDune2;
+
+  propagatedBuildInputs = [
+    ffmpeg-avutil
+    ffmpeg-avcodec
+    ffmpeg-avfilter
+    ffmpeg-swscale
+    ffmpeg-swresample
+    ffmpeg-av
+    ffmpeg-avdevice
+  ];
+
+  # The tests fail
+  doCheck = false;
+
+  meta = ffmpeg-base.meta // {
+    description = "Bindings for the ffmpeg libraries";
+  };
+
+}