padlock - Properly align data

padlock - Properly align data

* Most parameters to the xcrypt instruction need to be aligned to 16
  bytes. So far we haven't been aligning some of the data such as the
  key, iv and control structure. Refer to the "VIA PadLock Programming
  Guide" for more details.

* Address this by allocating a bit more
  space and setting stuff up at 16-byte boundaries and ensuring gcc
  aligns the whole structure 16-bytish. While this wastes some memory,
  it is negligible.

* This fixes the issue with encryption and decryption with padlock
  causing general protection faults.

Reported-by: Jan Lentfer (lentferj@)