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/tools/misc/itstool/default.nix

@@ -0,0 +1,29 @@
+{ stdenv, lib, fetchurl, python3 }:
+
+stdenv.mkDerivation rec {
+  pname = "itstool";
+  version = "2.0.6";
+
+  src = fetchurl {
+    url = "http://files.itstool.org/${pname}/${pname}-${version}.tar.bz2";
+    sha256 = "1acjgf8zlyk7qckdk19iqaca4jcmywd7vxjbcs1mm6kaf8icqcv2";
+  };
+
+  strictDeps = true;
+
+  nativeBuildInputs = [ python3 python3.pkgs.wrapPython ];
+  buildInputs = [ python3 python3.pkgs.libxml2 ];
+  pythonPath = [ python3.pkgs.libxml2 ];
+
+  postFixup = ''
+    wrapPythonPrograms
+  '';
+
+  meta = {
+    homepage = "http://itstool.org/";
+    description = "XML to PO and back again";
+    license = lib.licenses.gpl3Plus;
+    platforms = lib.platforms.all;
+    maintainers = [ ];
+  };
+}