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/mrkd/default.nix

@@ -0,0 +1,28 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, jinja2
+, mistune
+, pygments
+, setuptools
+}:
+
+buildPythonPackage rec {
+  pname = "mrkd";
+  version = "0.2.0";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "456f8c1be99da268554b29c6b5383532e58119def5a65d85270bc6a0ecc26aaf";
+  };
+
+  propagatedBuildInputs = [ jinja2 mistune pygments setuptools ];
+
+  pythonImportsCheck = [ "mrkd" ];
+
+  meta = with lib; {
+    description = "Write man pages using Markdown, and convert them to Roff or HTML";
+    homepage = "https://github.com/refi64/mrkd";
+    license = licenses.bsd2;
+  };
+}