crypto: add ablk helper header file

Change-Id: I28b19cb03cb12fb8764405184e43297038ab5453
Signed-off-by: Zhao Wei Liew <zhaoweiliew@gmail.com>
defconfig: enable optimised ARM SHA1 and AES routines and kernel mode NEON

Change-Id: If6483861d6367e5599d3efe7e98fcd067e35cf20
Signed-off-by: Zhao Wei Liew <zhaoweiliew@gmail.com>