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/lmtpd/default.nix

@@ -0,0 +1,20 @@
+{ buildPythonPackage, fetchPypi, isPy3k, lib }:
+
+buildPythonPackage rec {
+  pname = "lmtpd";
+  version = "6.2.0";
+
+  disabled = !isPy3k;
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "2c6825d2ffa1de099440411a742f58e1b3e8deeb3345adcfd4c2c38d4baf62b3";
+  };
+
+  meta = with lib; {
+    homepage = "https://github.com/moggers87/lmtpd";
+    description = "LMTP counterpart to smtpd in the Python standard library";
+    license = licenses.mit;
+    maintainers = with maintainers; [ jluttine ];
+  };
+}