AuditLog: Align the implementation to the PSA header

This change modifies the AuditLog service implementation
to reflect the changes introduced by the PSA compliant API
interface. The symbol name patterns for functions, variables,
folders and source files are also changed to be audit_* /
tfm_audit*.

Change-Id: I674060979961f568912870f49a72ed571499f059
Signed-off-by: Antonio de Angelis <antonio.deangelis@arm.com>
30 files changed