feat(notifications): receipt support enabled in partition manifest

Change-Id: I2d1310fb9fa6acd6a59b429a5b6e23f3652a8c43
Signed-off-by: J-Alves <joao.alves@arm.com>
diff --git a/inc/hf/manifest.h b/inc/hf/manifest.h
index 800d2d2..97364b7 100644
--- a/inc/hf/manifest.h
+++ b/inc/hf/manifest.h
@@ -142,6 +142,8 @@
 	uint8_t messaging_method;
 	/** optional */
 	bool managed_exit;
+	/** optional - receipt of notifications. */
+	bool notification_support;
 	/** optional */
 	bool has_primary_scheduler;
 	/** optional - preemptible / run to completion */