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/libraries/lpcnetfreedv/default.nix

@@ -0,0 +1,35 @@
+{ lib, stdenv, fetchFromGitHub, fetchurl, cmake, codec2 }:
+
+let
+  dataVersion = "191005_v1.0";
+  data = fetchurl {
+    url = "http://rowetel.com/downloads/deep/lpcnet_${dataVersion}.tgz";
+    sha256 = "1j1695hm2pg6ri611f9kr3spm4yxvpikws55z9zxizai8y94152h";
+  };
+in stdenv.mkDerivation rec {
+  pname = "lpcnetfreedv";
+  version = "unstable-2021-06-29";
+
+  src = fetchFromGitHub {
+    owner = "drowe67";
+    repo = "LPCNet";
+    rev = "0dc5935bbf49ff3ba3c9654cc2f802838ebbaead";
+    sha256 = "0r6488z40fkar11ync8achpg5l6qz7y7cbh7cs3b3w4fsxn58q9i";
+  };
+
+  nativeBuildInputs = [ cmake ];
+  buildInputs = [ codec2 ];
+
+  postPatch = ''
+    mkdir build
+    ln -s ${data} build/lpcnet_${dataVersion}.tgz
+  '';
+
+  meta = with lib; {
+    homepage = "https://freedv.org/";
+    description = "Experimental Neural Net speech coding for FreeDV";
+    license = licenses.bsd3;
+    maintainers = with maintainers; [ mvs ];
+    platforms = platforms.all;
+  };
+}