fix(ff-a): Advertise support for FFA_MEM_PERM* ABIs

Signed-off-by: Raghu Krishnamurthy <raghu.ncstate@gmail.com>
Change-Id: I588c4e732f8debfbf1ff8df27883ec853a230afe
diff --git a/src/api.c b/src/api.c
index e01f2db..a664811 100644
--- a/src/api.c
+++ b/src/api.c
@@ -1894,6 +1894,10 @@
 	case FFA_NOTIFICATION_SET_32:
 	case FFA_NOTIFICATION_GET_32:
 	case FFA_NOTIFICATION_INFO_GET_64:
+	case FFA_MEM_PERM_GET_32:
+	case FFA_MEM_PERM_SET_32:
+	case FFA_MEM_PERM_GET_64:
+	case FFA_MEM_PERM_SET_64:
 #endif
 		return (struct ffa_value){.func = FFA_SUCCESS_32};