feat(intel): support extended random number generation

feat(intel): support extended random number generation

The random number generation (RNG) mailbox command format
is updated to extends the support to upto 4080 bytes random
number generation. The new RNG format requires an opened
crypto service session.

A separated SMC function ID is introduced for the new RNG
format and it is only supported by Agilex.

Signed-off-by: Siew Chin Lim <elly.siew.chin.lim@intel.com>
Signed-off-by: Boon Khai Ng <boon.khai.ng@intel.com>
Signed-off-by: Sieu Mun Tang <sieu.mun.tang@intel.com>
Change-Id: I3f044a3c01ff7cb50be4705e2c1f982bf6f61432