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/networking/tnat64/default.nix

@@ -0,0 +1,32 @@
+{ lib, stdenv, fetchFromGitHub, autoreconfHook }:
+
+stdenv.mkDerivation rec {
+  pname = "tnat64";
+  version = "0.06";
+
+  src = fetchFromGitHub {
+    owner = "andrewshadura";
+    repo = pname;
+    rev = "${pname}-${version}";
+    sha256 = "191j1fpr3bw6fk48npl99z7iq6m1g33f15xk5cay1gnk5f46i2j6";
+  };
+
+  configureFlags = [ "--libdir=$(out)/lib" ];
+  nativeBuildInputs = [ autoreconfHook ];
+
+  meta = with lib; {
+    description = "IPv4 to IPv6 interceptor";
+    homepage = "https://github.com/andrewshadura/tnat64";
+    license = licenses.gpl2Plus;
+    longDescription = ''
+      TNAT64 is an interceptor which redirects outgoing TCPv4 connections
+      through NAT64, thus enabling an application running on an IPv6-only host
+      to communicate with the IPv4 world, even if that application does not
+      support IPv6 at all.
+    '';
+    platforms = platforms.unix;
+    badPlatforms = platforms.darwin;
+    maintainers = [ maintainers.rnhmjoj ];
+  };
+
+}