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/os-specific/darwin/insert_dylib/default.nix

@@ -0,0 +1,22 @@
+{ lib, stdenv, fetchFromGitHub, xcbuildHook }:
+
+stdenv.mkDerivation {
+  pname = "insert_dylib";
+  version = "unstable-2016-08-28";
+
+  src = fetchFromGitHub {
+    owner = "Tyilo";
+    repo = "insert_dylib";
+    rev = "c8beef66a08688c2feeee2c9b6eaf1061c2e67a9";
+    sha256 = "0az38y06pvvy9jf2wnzdwp9mp98lj6nr0ldv0cs1df5p9x2qvbya";
+  };
+
+  nativeBuildInputs = [ xcbuildHook ];
+
+  installPhase = ''
+    mkdir -p $out/bin
+    install -m755 Products/Release/insert_dylib $out/bin
+  '';
+
+  meta.platforms = lib.platforms.darwin;
+}