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
diff --git a/components/service/common/include/psa/sid.h b/components/service/common/include/psa/sid.h
index 04265c4..be245f4 100644
--- a/components/service/common/include/psa/sid.h
+++ b/components/service/common/include/psa/sid.h
@@ -20,12 +20,12 @@
 /* Invalid UID */
 #define TFM_PS_INVALID_UID 0
 
-/* PS message types that distinguish PS services. */
-#define TFM_PS_SET                1001
-#define TFM_PS_GET                1002
-#define TFM_PS_GET_INFO           1003
-#define TFM_PS_REMOVE             1004
-#define TFM_PS_GET_SUPPORT        1005
+/* PS / ITS message types that distinguish PS services. */
+#define TFM_PS_ITS_SET                1001
+#define TFM_PS_ITS_GET                1002
+#define TFM_PS_ITS_GET_INFO           1003
+#define TFM_PS_ITS_REMOVE             1004
+#define TFM_PS_ITS_GET_SUPPORT        1005
 
 /******** TFM_SP_ITS ********/
 #define TFM_INTERNAL_TRUSTED_STORAGE_SERVICE_SID                   (0x00000070U)