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/sshpubkeys/default.nix

@@ -0,0 +1,25 @@
+{ lib, buildPythonPackage, fetchFromGitHub
+, cryptography
+, ecdsa
+}:
+
+buildPythonPackage rec {
+  version = "3.3.1";
+  pname = "sshpubkeys";
+
+  src = fetchFromGitHub {
+    owner = "ojarva";
+    repo = "python-${pname}";
+    rev = version;
+    sha256 = "1qsixmqg97kyvg1naw76blq4314vaw4hl5f9wi0v111mcmdia1r4";
+  };
+
+  propagatedBuildInputs = [ cryptography ecdsa ];
+
+  meta = with lib; {
+    description = "OpenSSH Public Key Parser for Python";
+    homepage = "https://github.com/ojarva/python-sshpubkeys";
+    license = licenses.bsd3;
+    maintainers = [ ];
+  };
+}