staging: ccree: save ciphertext for CTS IV

staging: ccree: save ciphertext for CTS IV

BugLink: http://bugs.launchpad.net/bugs/1716284
commit 737aed947f9b5bd749a2684e13572ee99a1b8bae upstream.

The crypto API requires saving the last blocks of ciphertext
in req->info for use as IV for CTS mode. The ccree driver
was not doing this. This patch fixes that.

The bug was manifested with cts(cbc(aes)) mode in tcrypt tests.

Fixes: 302ef8ebb4b2 ("Add CryptoCell skcipher support")
Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Seth Forshee <seth.forshee@canonical.com>