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/brotlicffi/default.nix

@@ -0,0 +1,48 @@
+{ lib
+, fetchFromGitHub
+, buildPythonPackage
+, pythonOlder
+, cffi
+, brotli
+}:
+
+buildPythonPackage rec {
+  pname = "brotlicffi";
+  version = "1.0.9.2";
+  disabled = pythonOlder "3.6";
+
+  src = fetchFromGitHub {
+    owner = "python-hyper";
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "0qx7an7772brmx1rbbrqzqnkqqvicc70mx740nl31kzzyv4jjs00";
+  };
+
+  buildInputs = [
+    brotli
+  ];
+
+  propagatedNativeBuildInputs = [
+    cffi
+  ];
+
+  propagatedBuildInputs = [
+    cffi
+  ];
+
+  preBuild = ''
+    export USE_SHARED_BROTLI=1
+  '';
+
+  # Test data is not available, only when using libbrotli git checkout
+  doCheck = false;
+
+  pythonImportsCheck = [ "brotlicffi" ];
+
+  meta = with lib; {
+    description = "Python CFFI bindings to the Brotli library";
+    homepage = "https://github.com/python-hyper/brotlicffi";
+    license = licenses.mit;
+    maintainers = with maintainers; [ fab ];
+  };
+}