SST: Add encrypted object layer above sst core

This patch brings the encryption and decryption of object data out of
sst_core and into a new layer that sits between the object system
and sst core.

Change-Id: I2c122f7744fedac865e9f461da03a83723bbe068
Signed-off-by: Jamie Fox <jamie.fox@arm.com>
Co-Authored-by: Marc Moreno <marc.morenoberengue@arm.com>
10 files changed