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/asn1tools/default.nix

@@ -0,0 +1,41 @@
+{ lib
+, buildPythonPackage
+, fetchFromGitHub
+, bitstruct
+, diskcache
+, prompt-toolkit
+, pyparsing
+, python
+}:
+
+buildPythonPackage rec {
+  pname = "asn1tools";
+  version = "0.163.0";
+
+  src = fetchFromGitHub {
+    owner = "eerimoq";
+    repo = "asn1tools";
+    rev = "v${version}";
+    sha256 = "sha256-sbwwbwkhlZvCb2emuw1FTBj5pnv9SOtHpAcYPSQqIvM=";
+  };
+
+  propagatedBuildInputs = [
+    bitstruct
+    diskcache
+    prompt-toolkit
+    pyparsing
+  ];
+
+  checkPhase = ''
+    ${python.interpreter} setup.py test
+  '';
+
+  pythonImportsCheck = [ "asn1tools" ];
+
+  meta = with lib; {
+    description = "ASN.1 parsing, encoding and decoding";
+    homepage = "https://github.com/eerimoq/asn1tools";
+    license = licenses.mit;
+    maintainers = with maintainers; [ SuperSandro2000 ];
+  };
+}