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/games/gnuchess/default.nix

@@ -0,0 +1,28 @@
+{ lib, stdenv, fetchurl, flex, makeWrapper }:
+
+stdenv.mkDerivation rec {
+  pname = "gnuchess";
+  version = "6.2.9";
+
+  src = fetchurl {
+    url = "mirror://gnu/chess/gnuchess-${version}.tar.gz";
+    sha256 = "sha256-3fzCC911aQCpq2xCx9r5CiiTv38ZzjR0IM42uuvEGJA=";
+  };
+
+  buildInputs = [
+    flex
+  ];
+  nativeBuildInputs = [ makeWrapper ];
+
+  postInstall = ''
+    wrapProgram $out/bin/gnuchessx --set PATH "$out/bin"
+    wrapProgram $out/bin/gnuchessu --set PATH "$out/bin"
+  '';
+
+  meta = with lib; {
+    description = "GNU Chess engine";
+    maintainers = with maintainers; [ raskin ];
+    platforms = platforms.unix;
+    license = licenses.gpl3Plus;
+  };
+}