ts: Use RPC protocol UUID

Add the option to build the Trusted Services SPs with the rpc protocol
UUID as the FF-A UUID.

Signed-off-by: Jelle Sels <jelle.sels@arm.com>
Acked-by: Jens Wiklander <jens.wiklander@linaro.org>
diff --git a/trusted-services.mk b/trusted-services.mk
index 705b9f2..2c5b62b 100644
--- a/trusted-services.mk
+++ b/trusted-services.mk
@@ -115,7 +115,8 @@
 	echo "ed32d533-99e6-4209-9cc0-2d72cdd998a7,\
 	5c9edbc3-7b3a-4367-9f83-7c191ae86a37,\
 	7817164c-c40c-4d1a-867a-9bb2278cf41a,\
-	23eb0100-e32a-4497-9052-2f11e584afa6" > \
+	23eb0100-e32a-4497-9052-2f11e584afa6,\
+	bdcd76d7-825e-4751-963b-86d4f84943ac" > \
 		$(OUT_PATH)/linux-arm-ffa-user/sp_uuid_list.txt
 
 linux-arm-ffa-user-clean: