Drop unused 'd' argument from the cache save methods, simplifying the
API.
(Bitbake rev: 81bc1f20662c39ee8db1da45b1e8c7eb64abacf3)
Signed-off-by: Markus Lehtonen <markus.lehtonen@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>