[CRYPTO] lrw: Replace all adds to big endians variables with be*_add_cpu

replace all:
big_endian_variable = cpu_to_beX(beX_to_cpu(big_endian_variable) +
					expression_in_cpu_byteorder);
with:
	beX_add_cpu(&big_endian_variable, expression_in_cpu_byteorder);

Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Roel Kluin <12o3l@tiscali.nl>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

crypto/lrw.c

@@ -91,8 +91,9 @@ struct sinfo {
 
 static inline void inc(be128 *iv)
 {
-	if (!(iv->b = cpu_to_be64(be64_to_cpu(iv->b) + 1)))
-		iv->a = cpu_to_be64(be64_to_cpu(iv->a) + 1);
+	be64_add_cpu(&iv->b, 1);
+	if (!iv->b)
+		be64_add_cpu(&iv->a, 1);
 }
 
 static inline void lrw_round(struct sinfo *s, void *dst, const void *src)