build_helper_config: Add new dma350_ns config

The tf-m-extras repo has a new example for DMA350 NS tests.
Added the configuration for that so it can be used in the job-configs.

Change-Id: If5b75ef3698f2812377b60156632ef9e64bd2549
Signed-off-by: Bence Balogh <bence.balogh@arm.com>
diff --git a/build_helper/build_helper_config_maps.py b/build_helper/build_helper_config_maps.py
index a57ad84..91429ba 100644
--- a/build_helper/build_helper_config_maps.py
+++ b/build_helper/build_helper_config_maps.py
@@ -109,5 +109,6 @@
     "EXAMPLE_DMA350_TRIGGER"  : ("-DNS_EVALUATION_APP_PATH=%(codebase_root_dir)s/../tf-m-extras/examples/corstone310_fvp_dma/triggering_example "),
     "EXAMPLE_DMA350_CLCD"     : ("-DDEFAULT_NS_SCATTER=OFF -DPLATFORM_SVC_HANDLERS=ON "
                                 "-DNS_EVALUATION_APP_PATH=%(codebase_root_dir)s/../tf-m-extras/examples/corstone310_fvp_dma/clcd_example "),
-    "EXAMPLE_DMA350_S"        : "-DEXTRA_S_TEST_SUITE_PATH=%(codebase_root_dir)s/../tf-m-extras/examples/corstone310_fvp_dma/dma350_s"
+    "EXAMPLE_DMA350_S"        : "-DEXTRA_S_TEST_SUITE_PATH=%(codebase_root_dir)s/../tf-m-extras/examples/corstone310_fvp_dma/dma350_s",
+    "EXAMPLE_DMA350_NS"       : "-DEXTRA_NS_TEST_SUITE_PATH=%(codebase_root_dir)s/../tf-m-extras/examples/corstone310_fvp_dma/dma350_ns"
 }