feat(memory share): FFA_FEATURES(FFA_MEM_RETRIEVE_REQ)

Updates tests to pass when built against
https://review.trustedfirmware.org/c/hafnium/hafnium/+/18909

Signed-off-by: Karl Meakin <karl.meakin@arm.com>
Change-Id: Ic6c39ca6916b9f9298d7668021963fec287b72c8
diff --git a/include/runtime_services/ffa_svc.h b/include/runtime_services/ffa_svc.h
index 21b0333..6236ae3 100644
--- a/include/runtime_services/ffa_svc.h
+++ b/include/runtime_services/ffa_svc.h
@@ -164,6 +164,8 @@
 #define FFA_NOTIFICATION_INFO_GET_SMC64 \
 	FFA_FID(SMC_64, FFA_FNUM_NOTIFICATION_INFO_GET)
 
+#define FFA_FEATURES_MEM_RETRIEVE_REQ_NS_SUPPORT (UINT32_C(1) << 1)
+
 /* Implementation defined SMC64 FIDs */
 #define FFA_CONSOLE_LOG_SMC64	FFA_FID(SMC_64, FFA_FNUM_CONSOLE_LOG)
 /*