crypto: hash - Removed vestigial ahash fields

The base field in ahash_tfm appears to have been cut-n-pasted from
ablkcipher.  It isn't needed here at all.  Similarly, the info field
in ahash_request also appears to have originated from its cipher
counter-part and is vestigial.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

crypto/ahash.c

@@ -76,7 +76,6 @@ static int crypto_init_ahash_ops(struct crypto_tfm *tfm, u32 type, u32 mask)
 	crt->final  = alg->final;
 	crt->digest = alg->digest;
 	crt->setkey = ahash_setkey;
-	crt->base   = __crypto_ahash_cast(tfm);
 	crt->digestsize = alg->digestsize;
 
 	return 0;

crypto/digest.c

@@ -234,7 +234,6 @@ int crypto_init_digest_ops_async(struct crypto_tfm *tfm)
 	crt->setkey     = dalg->dia_setkey ? digest_async_setkey :
 						digest_async_nosetkey;
 	crt->digestsize = dalg->dia_digestsize;
-	crt->base       = __crypto_ahash_cast(tfm);
 
 	return 0;
 }

crypto/hash.c

@@ -128,7 +128,6 @@ static int crypto_init_hash_ops_async(struct crypto_tfm *tfm)
 	crt->digest     = hash_async_digest;
 	crt->setkey     = hash_async_setkey;
 	crt->digestsize = alg->digestsize;
-	crt->base       = __crypto_ahash_cast(tfm);
 
 	return 0;
 }

include/linux/crypto.h

@@ -137,8 +137,6 @@ struct ablkcipher_request {
 struct ahash_request {
 	struct crypto_async_request base;
 
-	void *info;
-
 	unsigned int nbytes;
 	struct scatterlist *src;
 	u8		   *result;
@@ -420,7 +418,6 @@ struct ahash_tfm {
 			unsigned int keylen);
 
 	unsigned int digestsize;
-	struct crypto_ahash *base;
 	unsigned int reqsize;
 };
 
@@ -1384,7 +1381,7 @@ static inline int crypto_ahash_setkey(struct crypto_ahash *tfm,
 {
 	struct ahash_tfm *crt = crypto_ahash_crt(tfm);
 
-	return crt->setkey(crt->base, key, keylen);
+	return crt->setkey(tfm, key, keylen);
 }
 
 static inline int crypto_ahash_digest(struct ahash_request *req)
@@ -1396,7 +1393,7 @@ static inline int crypto_ahash_digest(struct ahash_request *req)
 static inline void ahash_request_set_tfm(struct ahash_request *req,
 					 struct crypto_ahash *tfm)
 {
-	req->base.tfm = crypto_ahash_tfm(crypto_ahash_crt(tfm)->base);
+	req->base.tfm = crypto_ahash_tfm(tfm);
 }
 
 static inline struct ahash_request *ahash_request_alloc(