Made openocd work with ft2232 jtag chipset, that of the Sheevaplug.

svn path=/nixpkgs/trunk/; revision=17407

pkgs/development/libraries/libftdi/default.nix

@@ -0,0 +1,20 @@
+{stdenv, fetchurl, libusb}:
+
+stdenv.mkDerivation rec {
+  name = "libftdi-0.16";
+  
+  src = fetchurl {
+    url = "http://www.intra2net.com/en/developer/libftdi/download/${name}.tar.gz";
+    sha256 = "1n12lcvpzmkph12gmg7i7560s0yly2gjgwhxh2h2inq93agg1xv2";
+  };
+
+  buildInputs = [ libusb ];
+
+  propagatedBuildInputs = [ libusb ];
+
+  meta = {
+    description = "A library to talk to FTDI chips using libusb";
+    homepage = http://www.intra2net.com/en/developer/libftdi/;
+    license = "LGPLv2.1";
+  };
+}