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/progressbar/default.nix

@@ -0,0 +1,21 @@
+{ lib, buildPythonPackage, fetchPypi }:
+
+buildPythonPackage rec {
+  pname = "progressbar";
+  version = "2.5";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "5d81cb529da2e223b53962afd6c8ca0f05c6670e40309a7219eacc36af9b6c63";
+  };
+
+  # invalid command 'test'
+  doCheck = false;
+
+  meta = with lib; {
+    homepage = "https://pypi.python.org/pypi/progressbar";
+    description = "Text progressbar library for python";
+    license = licenses.lgpl3Plus;
+    maintainers = with maintainers; [ domenkozar ];
+  };
+}