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/python-modules/dicttoxml/default.nix

@@ -0,0 +1,23 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+}:
+
+buildPythonPackage rec {
+  pname = "dicttoxml";
+  version = "1.7.4";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "ea44cc4ec6c0f85098c57a431a1ee891b3549347b07b7414c8a24611ecf37e45";
+  };
+
+  # No tests in archive
+  doCheck = false;
+
+  meta = {
+    description = "Converts a Python dictionary or other native data type into a valid XML string";
+    homepage = "https://github.com/quandyfactory/dicttoxml";
+    license = lib.licenses.gpl2;
+  };
+}