test: exercise DMA isolation for secure access to ns memory

This test helps to validate a scenario where a secure stream
belonging to Cactus SP accesses non-secure IPA space.

Signed-off-by: Madhukar Pappireddy <madhukar.pappireddy@arm.com>
Change-Id: I8085f2974d53b9cec9b3ae4a17fd328607b76e2b
diff --git a/spm/cactus/cactus_main.c b/spm/cactus/cactus_main.c
index be6baa9..e0e2c88 100644
--- a/spm/cactus/cactus_main.c
+++ b/spm/cactus/cactus_main.c
@@ -115,6 +115,8 @@
 	/* scratch memory allocated to be used for running SMMU tests */
 	MAP_REGION_FLAT(PLAT_CACTUS_MEMCPY_BASE, PLAT_CACTUS_MEMCPY_RANGE,
 			MT_MEMORY | MT_RW),
+	MAP_REGION_FLAT(PLAT_CACTUS_NS_MEMCPY_BASE, PLAT_CACTUS_MEMCPY_RANGE,
+			MT_MEMORY | MT_RW | MT_NS),
 	{0}
 };