crypto: sahara - replace sahara_sg_length with sg_nents_for_len
crypto: sahara - replace sahara_sg_length with sg_nents_for_len

The sahara_sg_length function of the sahara driver is the same
as sg_nents_for_len from lib/scatterlist.c

Signed-off-by: LABBE Corentin <4df73f6d53a690d105cd8130f057950f3b2f7aac@gmail.com>
Signed-off-by: Herbert Xu <ef65de1c7be0aa837fe7b25ba9a7739905af6a55@gondor.apana.org.au>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs