refactor(smc): group all smc tests

Move and group all smccc related tests to tests-smc*
file.

Change-Id: I34eb4dc906b558badab2c9356bb316d92f40914a
Signed-off-by: Govindraj Raja <govindraj.raja@arm.com>
diff --git a/tftf/tests/tests-smc.mk b/tftf/tests/tests-smc.mk
index 8496cd1..c3058b2 100644
--- a/tftf/tests/tests-smc.mk
+++ b/tftf/tests/tests-smc.mk
@@ -1,7 +1,13 @@
 #
-# Copyright (c) 2018, Arm Limited. All rights reserved.
+# Copyright (c) 2018-2024, Arm Limited. All rights reserved.
 #
 # SPDX-License-Identifier: BSD-3-Clause
 #
 
-TESTS_SOURCES += tftf/tests/runtime_services/generic/generic_smc.c
+TESTS_SOURCES	+=						\
+	$(addprefix tftf/tests/runtime_services/,		\
+		generic/generic_smc.c				\
+		standard_service/query_std_svc.c		\
+		standard_service/unknown_smc.c 			\
+	)
+