fix(rme): use RMM shared buffer for attest SMCs

Use the RMM shared buffer to attestation token and signing key SMCs.

Signed-off-by: Javier Almansa Sobrino <javier.almansasobrino@arm.com>
Change-Id: I313838b26d3d9334fb0fe8cd4b229a326440d2f4
diff --git a/include/services/rmmd_svc.h b/include/services/rmmd_svc.h
index 8e9bdab..6adc5f3 100644
--- a/include/services/rmmd_svc.h
+++ b/include/services/rmmd_svc.h
@@ -84,12 +84,12 @@
 #define RMMD_GTSI_UNDELEGATE		SMC64_RMMD_EL3_FID(U(1))
 
 /* Return error codes from RMM-EL3 SMCs */
-#define RMMD_OK				0
-#define RMMD_ERR_BAD_ADDR		-2
-#define RMMD_ERR_BAD_PAS		-3
-#define RMMD_ERR_NOMEM			-4
-#define RMMD_ERR_INVAL			-5
-#define RMMD_ERR_UNK			-6
+#define E_RMM_OK			 0
+#define E_RMM_UNK			-1
+#define E_RMM_BAD_ADDR			-2
+#define E_RMM_BAD_PAS			-3
+#define E_RMM_NOMEM			-4
+#define E_RMM_INVAL			-5
 
 /* Acceptable SHA sizes for Challenge object */
 #define SHA256_DIGEST_SIZE	32U