qemu_v8: OP-TEE SP enable FF-A notifications

Add the SP manifest property node permitting a SP to manage
notifications.

Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
Acked-by: Etienne Carriere <etienne.carriere@foss.st.com>
diff --git a/qemu_v8/optee_sp_manifest.dts b/qemu_v8/optee_sp_manifest.dts
index 1a06757..35c2f4b 100644
--- a/qemu_v8/optee_sp_manifest.dts
+++ b/qemu_v8/optee_sp_manifest.dts
@@ -29,6 +29,7 @@
 	boot-order = <0>;
 	messaging-method = <0x3>; /* Direct messaging only */
 	ns-interrupts-action = <1>; /* NS_ACTION_ME */
+	notification-support;
 
 	/* Boot protocol */
 	gp-register-num = <0x0>;