Build: Support IAR toolchain

Signed-off-by: David Hu <david.hu@arm.com>
Change-Id: I0864d703f1199c66fdb788ce7cf7467bb21f0baa
diff --git a/tests_reg/CMakeLists.txt b/tests_reg/CMakeLists.txt
index 0833e8c..13a8f08 100644
--- a/tests_reg/CMakeLists.txt
+++ b/tests_reg/CMakeLists.txt
@@ -94,6 +94,7 @@
     PRIVATE
         $<$<C_COMPILER_ID:GNU>:-Wl,-Map=${CMAKE_BINARY_DIR}/bin/tfm_ns.map>
         $<$<C_COMPILER_ID:ARMClang>:--map>
+        $<$<C_COMPILER_ID:IAR>:--map\;${CMAKE_BINARY_DIR}/bin/tfm_ns.map>
 )
 
 add_convert_to_bin_target(tfm_ns)