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/python-baseconv/default.nix

@@ -0,0 +1,22 @@
+{ buildPythonPackage
+, fetchPypi
+, lib
+}:
+buildPythonPackage rec {
+  pname = "python-baseconv";
+  version = "1.2.2";
+
+  src = fetchPypi {
+    inherit pname version ;
+    sha256 = "0539f8bd0464013b05ad62e0a1673f0ac9086c76b43ebf9f833053527cd9931b";
+  };
+
+  pythonImportsCheck = [ "baseconv" ];
+
+  meta = with lib; {
+    description = "Python module to convert numbers from base 10 integers to base X strings and back again";
+    homepage = "https://github.com/semente/python-baseconv";
+    license = licenses.psfl;
+    maintainers = with maintainers; [ rakesh4g ];
+  };
+}