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/security/aespipe/default.nix

@@ -0,0 +1,29 @@
+{ lib, stdenv, fetchurl, sharutils, makeWrapper }:
+
+stdenv.mkDerivation rec {
+  pname = "aespipe";
+  version = "2.4f";
+
+  src = fetchurl {
+    url = "mirror://sourceforge/loop-aes/aespipe/aespipe-v${version}.tar.bz2";
+    sha256 = "15pg9j27mjzl78mpzkdqd84kdafj0g6j72f8wgjrpp2qkxjy2ddi";
+  };
+
+  nativeBuildInputs = [ makeWrapper ];
+
+  configureFlags = [ "--enable-padlock" "--enable-intelaes" ];
+
+  postInstall = ''
+    cp bz2aespipe $out/bin
+    wrapProgram $out/bin/bz2aespipe \
+     --prefix PATH : $out/bin:${lib.makeBinPath [ sharutils ]}
+  '';
+
+  meta = with lib; {
+    description = "AES encrypting or decrypting pipe";
+    homepage = "http://loop-aes.sourceforge.net/aespipe.README";
+    license = licenses.gpl2;
+    maintainers = [ maintainers.goibhniu ];
+    platforms = platforms.unix;
+  };
+}