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/dateutils/default.nix

@@ -0,0 +1,25 @@
+{ lib, buildPythonPackage, fetchPypi, python-dateutil, pytz }:
+
+buildPythonPackage rec {
+  pname = "dateutils";
+  version = "0.6.12";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "sha256-A92QvLIVQb1OtLATY35PG1+USIHEbMbktnpgWeNw4/E=";
+  };
+
+  propagatedBuildInputs = [
+    python-dateutil
+    pytz
+  ];
+
+  pythonImportsCheck = [ "dateutils" ];
+
+  meta = with lib; {
+    description = "Utilities for working with datetime objects.";
+    homepage = "https://github.com/jmcantrell/python-dateutils";
+    license = licenses.bsd0;
+    maintainers = with maintainers; [ SuperSandro2000 ];
+  };
+}