staging: crypto: skein: add TODO file

Signed-off-by: Jason Cooper <jason@lakedaemon.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/skein/TODO

+skein/threefish TODO
+
+ - rename camelcase vars
+ - rename camelcase functions
+ - rename files
+ - move macros into appropriate header files
+ - add / pass test vectors
+ - module support
+
+Please send patches to Jason Cooper <jason@lakedaemon.net> in addition to the
+staging tree mailinglist.