Add test case for isolation to EQ_CORE_FIR

Signed-off-by: Zane Shelley <zshelle@us.ibm.com>
Change-Id: I0a169af189fad1189a981ecbb540141594655778
diff --git a/test/simulator/testcases/meson.build b/test/simulator/testcases/meson.build
index 6aabb36..5d9e306 100644
--- a/test/simulator/testcases/meson.build
+++ b/test/simulator/testcases/meson.build
@@ -1,6 +1,7 @@
 # Test cases
 test_src = files(
     'sample_test_case.cpp',
+    'eq_core_fir.cpp',
     'exp20_foxhound7.cpp',
     'exp20_tlx_err_rpt_1.cpp',
     'omi_dl_fatal.cpp',