arm/crypto: Add optimized AES and SHA1 routines

Add assembler versions of AES and SHA1 for ARM platforms.  This has provided
up to a 50% improvement in IPsec/TCP throughout for tunnels using AES128/SHA1.

Platform   CPU SPeed    Endian   Before (bps)   After (bps)   Improvement

IXP425      533 MHz      big     11217042        15566294        ~38%
KS8695      166 MHz     little    3828549         5795373        ~51%

Change-Id: I6ed0bd93fa62b6f8eaf19406def5f8ddd2be8ab7
Signed-off-by: David McCullough <ucdevel@gmail.com>
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>