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/openct/default.nix

@@ -0,0 +1,42 @@
+{ lib, stdenv, fetchFromGitHub, autoreconfHook, pkg-config, pcsclite, libusb-compat-0_1
+, doxygen, libxslt
+}:
+
+stdenv.mkDerivation rec {
+  pname = "openct";
+  version = "0.6.20";
+
+  src = fetchFromGitHub {
+    owner = "OpenSC";
+    repo = "openct";
+    rev = "${pname}-${version}";
+    sha256 = "09wxq0jxdxhci3zr7jd3zcxjkl3j0r1v00k3q8gqrg9gighh8nk2";
+  };
+
+  postPatch = ''
+    sed -i 's,$(DESTDIR),$(out),g' etc/Makefile.am
+  '';
+
+  configureFlags = [
+    "--enable-api-doc"
+    "--enable-usb"
+    "--enable-pcsc"
+    "--localstatedir=/var"
+    "--sysconfdir=/etc"
+  ];
+
+  nativeBuildInputs = [ autoreconfHook pkg-config ];
+  buildInputs = [ pcsclite libusb-compat-0_1 doxygen libxslt ];
+
+  preInstall = ''
+    mkdir -p $out/etc
+  '';
+
+  meta = with lib; {
+    broken = stdenv.isDarwin;
+    homepage = "https://github.com/OpenSC/openct/";
+    license = licenses.lgpl21;
+    description = "Drivers for several smart card readers";
+    platforms = platforms.all;
+  };
+}