Correct ahash_process_req() to properly handle cases
where the total hash amount is a multiple of the blocksize.
The SEC must have some data to hash during the very last
descriptor operation; so up to one whole blocksize
of data is buffered until the final hash.
Signed-off-by: NLee Nipper <lee.nipper@gmail.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>