FWU: Add FWU regression test configurations

Change-Id: I927550308dfd6e337b90dd0dd9a3687d8b014496
Signed-off-by: Sherry Zhang <sherry.zhang2@arm.com>
diff --git a/config/config_default.cmake b/config/config_default.cmake
index be50f6d..ae6089e 100644
--- a/config/config_default.cmake
+++ b/config/config_default.cmake
@@ -150,6 +150,10 @@
 set(TFM_CRYPTO_TEST_ALG_SHA_512         ON          CACHE BOOL      "Test SHA-512 cryptography algorithm")
 set(TFM_CRYPTO_TEST_HKDF                ON          CACHE BOOL      "Test SHA-512 cryptography algorithm")
 
+set(TFM_FWU_TEST_REQUEST_REBOOT         OFF         CACHE BOOL      "Test psa_fwu_request_reboot")
+set(TFM_FWU_TEST_WRITE_WITH_NULL        OFF         CACHE BOOL      "Test psa_fwu_write with data block NULL")
+set(TFM_FWU_TEST_QUERY_WITH_NULL        OFF         CACHE BOOL      "Test psa_fwu_query with info NULL")
+
 ################################## Dependencies ################################
 
 set(MBEDCRYPTO_PATH                     "DOWNLOAD"  CACHE PATH      "Path to Mbed Crypto (or DOWNLOAD to fetch automatically")