[CRYPTO] cipher: Set alignmask for multi-byte loads

Many cipher implementations use 4-byte/8-byte loads/stores which require
alignment on some architectures.  This patch explicitly sets the alignment
requirements for them.

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

crypto/twofish.c

@@ -879,6 +879,7 @@ static struct crypto_alg alg = {
 	.cra_flags          =   CRYPTO_ALG_TYPE_CIPHER,
 	.cra_blocksize      =   TF_BLOCK_SIZE,
 	.cra_ctxsize        =   sizeof(struct twofish_ctx),
+	.cra_alignmask      =	3,
 	.cra_module         =   THIS_MODULE,
 	.cra_list           =   LIST_HEAD_INIT(alg.cra_list),
 	.cra_u              =   { .cipher = {