Core: Add message processing for IPC veneer

Add PSA message processing in veneer functions:
- Send PSA message to IPC queue and it will trigger IPC event.
- Schedule out to let CPU to process IPC event.
- Return PSA_VERSION_NONE in tfm_psa_version_veneer function.

Change-Id: Ie3ed12dc95ccf5cc1153dabe1ae20449c7eb6830
Signed-off-by: Edison Ai <edison.ai@arm.com>
1 file changed