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/tools/security/xortool/default.nix

@@ -0,0 +1,35 @@
+{ lib
+, buildPythonApplication
+, docopt
+, fetchFromGitHub
+, importlib-metadata
+, poetry-core
+}:
+
+buildPythonApplication rec {
+  pname = "xortool";
+  version = "1.0.0";
+  format = "pyproject";
+
+  src = fetchFromGitHub {
+    owner = "hellman";
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "19lfadi28r89bl5q8fhrxgjgs3nx3kgjd4rdg7wbvzi1cn29c5n7";
+  };
+
+  nativeBuildInputs = [ poetry-core ];
+
+  propagatedBuildInputs = [ docopt importlib-metadata ];
+
+  # Project has no tests
+  doCheck = false;
+  pythonImportsCheck = [ "xortool" ];
+
+  meta = with lib; {
+    description = "Tool to analyze multi-byte XOR cipher";
+    homepage = "https://github.com/hellman/xortool";
+    license = with licenses; [ mit ];
+    maintainers = with maintainers; [ fab ];
+  };
+}