Test: Add NS test suite for SFN backend

Test can be opened via only enabling the SFN partitions.

Signed-off-by: Mingyang Sun <mingyang.sun@arm.com>
Change-Id: I0aca16be5b58b9eb697da8cbc884ea79a868b06b
diff --git a/test/config/check_config.cmake b/test/config/check_config.cmake
index 171f6d2..1d08884 100644
--- a/test/config/check_config.cmake
+++ b/test/config/check_config.cmake
@@ -26,6 +26,7 @@
 message(STATUS "TEST_NS_FLIH_IRQ is set as ${TEST_NS_FLIH_IRQ}")
 message(STATUS "TEST_NS_MULTI_CORE is set as ${TEST_NS_MULTI_CORE}")
 message(STATUS "TEST_NS_MANAGE_NSID is set as ${TEST_NS_MANAGE_NSID}")
+message(STATUS "TEST_NS_SFN_BACKEND is set as ${TEST_NS_SFN_BACKEND}")
 message(STATUS "TEST_S_ATTESTATION is set as ${TEST_S_ATTESTATION}")
 message(STATUS "TEST_S_AUDIT is set as ${TEST_S_AUDIT}")
 message(STATUS "TEST_S_CRYPTO is set as ${TEST_S_CRYPTO}")