crypto: cryptd - Remove reference to crypto_aead_crt

Pretty soon the crypto_aead encrypt/decrypt hooks will disappear
as they are now always identical to those in struct aead_alg.

This patch replaces the references to these hooks with the ones
from aead_alg instead.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

diff --cc crypto/cryptd.c
Simple merge