Entropy Tweaks

Change-Id: I395b066da56cafcf89078b9080ece6247ada772d
arm/crypto: Add optimized AES and SHA1 routines

Change-Id: I14210802bcde21db274d7af32c371c5f32d3063c
Fix Frandom derp

Change-Id: I1af38cefe78b34639710f1c7f97643f955ef0d55