AuditLog: Add secure service basic files and folders

Adds the secure service basic function skeletons,
files and folder structure organisation.

Change-Id: I0a54a9c9f35f340eaeeee31e12d43a4f4de3ca6f
Signed-off-by: Antonio de Angelis <antonio.deangelis@arm.com>
diff --git a/secure_fw/spm/spm_partition_defs.h b/secure_fw/spm/spm_partition_defs.h
index 4cf6420..e950027 100644
--- a/secure_fw/spm/spm_partition_defs.h
+++ b/secure_fw/spm/spm_partition_defs.h
@@ -39,5 +39,6 @@
 
 /* ***** Normal partition ID-s ***** */
 #define TFM_SP_STORAGE_ID (TFM_SP_BASE)
+#define TFM_SP_AUDIT_LOG_ID (TFM_SP_BASE + 1)
 
 #endif /* __SPM_PARTITION_DEFS_H__ */