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/archivers/zpaq/zpaqd.nix

@@ -0,0 +1,40 @@
+{ lib, stdenv, fetchurl, unzip }:
+
+let
+  compileFlags = lib.concatStringsSep " " ([ "-O3" "-DNDEBUG" ]
+    ++ lib.optional (stdenv.hostPlatform.isUnix) "-Dunix -pthread"
+    ++ lib.optional (!stdenv.hostPlatform.isx86) "-DNOJIT");
+in
+stdenv.mkDerivation rec {
+  pname = "zpaqd";
+  version = "715";
+
+  src = fetchurl {
+    url = "http://mattmahoney.net/dc/zpaqd${version}.zip";
+    sha256 = "sha256-Mx87Zt0AASk0ZZCjyTzYbhlYJAXBlb59OpUWsqynyCA=";
+  };
+
+  sourceRoot = ".";
+
+  nativeBuildInputs = [ unzip ];
+
+  buildPhase = ''
+    $CXX ${compileFlags} -fPIC --shared libzpaq.cpp -o libzpaq.so
+    $CXX ${compileFlags} -L. -L"$out/lib" -lzpaq zpaqd.cpp -o zpaqd
+  '';
+
+  installPhase = ''
+    mkdir -p "$out"/{bin,include,lib,share/doc/zpaq}
+    cp libzpaq.so "$out/lib"
+    cp zpaqd "$out/bin"
+    cp libzpaq.h "$out/include"
+    cp readme_zpaqd.txt "$out/share/doc/zpaq"
+  '';
+
+  meta = with lib; {
+    description = "ZPAQ archive (de)compressor and algorithm development tool";
+    license = licenses.gpl3Plus;
+    maintainers = with maintainers; [ raskin ];
+    platforms = platforms.linux;
+  };
+}