This patch adds the glue code to detect and utilize the Intel SHA
extensions optimized SHA1 and SHA256 update transforms when available.

This code has been tested on Broxton for functionality.
Originally-by: NChandramouli Narayanan <mouli_7982@yahoo.com>
Signed-off-by: NTim Chen <tim.c.chen@linux.intel.com>
Acked-by: NDavid S. Miller <davem@davemloft.net>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>