Setup Internal Trusted Storage backend as openamp

Use secure storage ipc implementation as a backend for
ITS (Internal Trusted Storage) backend.

Signed-off-by: Satish Kumar <satish.kumar01@arm.com>
Signed-off-by: Rui Miguel Silva <rui.silva@linaro.org>
Change-Id: I5b5fa1550dd20b517a1a6efb73afd91abf6427c2
3 files changed