crypto: ccree - update a stale reference to ablkcipher

The ccree driver does not use the ablkcipher interface but contains
a rudimentary reference to it in the naming of an unrelated macro.
Let's rename it to avoid confusion.

Acked-by: Gilad Ben-Yossef <gilad@benyossef.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>