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/cffsubr/default.nix

@@ -0,0 +1,42 @@
+{ stdenv
+, lib
+, buildPythonPackage
+, fetchPypi
+, fonttools
+, pytestCheckHook
+, setuptools-scm
+}:
+
+buildPythonPackage rec {
+  pname = "cffsubr";
+  version = "0.2.9.post1";
+
+  format = "pyproject";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "azFBLc9JyPqEZkvahn4u3cVbb+b6aW/yU8TxOp/y/Fw=";
+  };
+
+  nativeBuildInputs = [
+    setuptools-scm
+  ];
+
+  propagatedBuildInputs = [
+    fonttools
+  ];
+
+  checkInputs = [
+    pytestCheckHook
+  ];
+
+  pythonImportsCheck = [ "cffsubr" ];
+
+  meta = with lib; {
+    broken = stdenv.isDarwin;
+    description = "Standalone CFF subroutinizer based on AFDKO tx";
+    homepage = "https://github.com/adobe-type-tools/cffsubr";
+    license = licenses.asl20;
+    maintainers = with maintainers; [ jtojnar ];
+  };
+}