crypto: gcm - use correct endianness type in gcm_hash_len()

In gcm_hash_len(), use be128 rather than u128.  This fixes the following
sparse warnings:

    crypto/gcm.c:252:19: warning: incorrect type in assignment (different base types)
    crypto/gcm.c:252:19:    expected unsigned long long [usertype] a
    crypto/gcm.c:252:19:    got restricted __be64 [usertype]
    crypto/gcm.c:253:19: warning: incorrect type in assignment (different base types)
    crypto/gcm.c:253:19:    expected unsigned long long [usertype] b
    crypto/gcm.c:253:19:    got restricted __be64 [usertype]

No actual change in behavior.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

crypto/gcm.c

@@ -247,7 +247,7 @@ static int gcm_hash_len(struct aead_request *req, u32 flags)
 	struct crypto_gcm_req_priv_ctx *pctx = crypto_gcm_reqctx(req);
 	struct ahash_request *ahreq = &pctx->u.ahreq;
 	struct crypto_gcm_ghash_ctx *gctx = &pctx->ghash_ctx;
-	u128 lengths;
+	be128 lengths;
 
 	lengths.a = cpu_to_be64(req->assoclen * 8);
 	lengths.b = cpu_to_be64(gctx->cryptlen * 8);