Workaround: Disable reg L1 test with GNUARM toolchain for PSoC64

There is an issue on the regression level one test with GNUARM toolchain [1]

[1]: https://linaro.atlassian.net/browse/TFC-231

Signed-off-by: Arthur She <arthur.she@linaro.org>
Change-Id: I29ff84c1bc4248e2fa4f37989a37a8ebc95f35c7
diff --git a/build_helper/build_helper_configs.py b/build_helper/build_helper_configs.py
index 6a47eaf..dae3a63 100755
--- a/build_helper/build_helper_configs.py
+++ b/build_helper/build_helper_configs.py
@@ -183,6 +183,8 @@
     ("cypress/psoc64", "*", "*", "*", "*", "*", "*", "*", True, "*", "*", "*", "*"),
     # psoc64 does not support Debug build type
     ("cypress/psoc64", "*", "*", "*", "*", "*", "Debug", "*", "*", "*", "*", "*", "*"),
+    # PSoC64 platform got issue on regression level one test with GNUARM toolchain, disable it as a workaround
+    ("cypress/psoc64", "toolchain_GNUARM.cmake", "*", "1", "*", "*", "*", "*", "*", "*", "*", "*", "*"),
     # Musca b1 SSE 200 does not support Profile S
     ("arm/musca_b1/sse_200", "*", "*", "*", "*", "*", "*", "*", "*", "*", "profile_small", "*", "*"),
     # Musca B1 Secure Enclave requires IPC model, BL2, and supports only Isolation Level 1