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/py-multihash/default.nix

@@ -0,0 +1,48 @@
+{ base58
+, buildPythonPackage
+, fetchFromGitHub
+, lib
+, morphys
+, pytest-runner
+, pytestCheckHook
+, pythonOlder
+, six
+, varint
+}:
+
+buildPythonPackage rec {
+  pname = "py-multihash";
+  version = "2.0.1";
+  disabled = pythonOlder "3.4";
+
+  src = fetchFromGitHub {
+    owner = "multiformats";
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "sha256-z1lmSypGCMFWJNzNgV9hx/IStyXbpd5jvrptFpewuOA=";
+  };
+
+  nativeBuildInputs = [
+    pytest-runner
+  ];
+
+  propagatedBuildInputs = [
+    base58
+    morphys
+    six
+    varint
+  ];
+
+  checkInputs = [
+    pytestCheckHook
+  ];
+
+  pythonImportsCheck = [ "multihash" ];
+
+  meta = with lib; {
+    description = "Self describing hashes - for future proofing";
+    homepage = "https://github.com/multiformats/py-multihash";
+    license = licenses.mit;
+    maintainers = with maintainers; [ rakesh4g ];
+  };
+}