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/python2-modules/importlib-metadata/default.nix

@@ -0,0 +1,37 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, setuptools-scm
+, zipp
+, pathlib2
+, contextlib2
+, configparser
+, isPy3k
+}:
+
+buildPythonPackage rec {
+  pname = "importlib-metadata";
+  version = "2.1.1";
+
+  src = fetchPypi {
+    pname = "importlib_metadata";
+    inherit version;
+    sha256 = "1pdmsmwagimn0lsl4x7sg3skcr2fvzqpv2pjd1rh7yrm5gzrxpmq";
+  };
+
+  nativeBuildInputs = [ setuptools-scm ];
+
+  propagatedBuildInputs = [ zipp ]
+    ++ lib.optionals (!isPy3k) [ pathlib2 contextlib2 configparser ];
+
+  # Cyclic dependencies
+  doCheck = false;
+
+  pythonImportsCheck = [ "importlib_metadata" ];
+
+  meta = with lib; {
+    description = "Read metadata from Python packages";
+    homepage = "https://importlib-metadata.readthedocs.io/";
+    license = licenses.asl20;
+  };
+}