Add generic AES functions that should be able to support all the modes
of operation of the hardware AES crypto engine, i.e. ECB, CBC, CTR,
CBC-MAC, GCM, and CCM.
This makes it possible to easily implement these modes of operation
without duplicating code.
Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau.dev@gmail.com>