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/freebind/default.nix

@@ -0,0 +1,32 @@
+{ lib, stdenv, fetchFromGitHub, libnetfilter_queue, libnfnetlink }:
+
+stdenv.mkDerivation {
+  pname = "freebind";
+  version = "2017-12-27";
+
+  src = fetchFromGitHub {
+    owner = "blechschmidt";
+    repo = "freebind";
+    rev = "9a13d6f9c12aeea4f6d3513ba2461d34f841f278";
+    sha256 = "1iv2xiz9w8hbz684caw50fn4a9vc8ninfgaqafkh9sa8mzpfzcqr";
+  };
+
+  buildInputs = [ libnetfilter_queue libnfnetlink ];
+
+  postPatch = ''
+    substituteInPlace preloader.c --replace /usr/local/ $out/
+    substituteInPlace Makefile    --replace /usr/local/ $out/
+  '';
+
+  preInstall = ''
+    mkdir -p $out/bin $out/lib
+  '';
+
+  meta = with lib; {
+    description = "IPv4 and IPv6 address rate limiting evasion tool";
+    homepage = "https://github.com/blechschmidt/freebind";
+    license = licenses.gpl3;
+    platforms = platforms.linux;
+    maintainers = with maintainers; [ volth ];
+  };
+}