Add level checking to TOSA Ref model

Signed-off-by: Jerry Ge <jerry.ge@arm.com>
Change-Id: I5689d7c6b902a319a68fa4628b59e0bcc23aeca4
diff --git a/verif/runner/tosa_verif_run_tests.py b/verif/runner/tosa_verif_run_tests.py
index ddb32a4..6b5d77e 100644
--- a/verif/runner/tosa_verif_run_tests.py
+++ b/verif/runner/tosa_verif_run_tests.py
@@ -139,6 +139,14 @@
         choices=["tosa-bi", "tosa-mi"],
         help="Filter tests based on profile",
     )
+    parser.add_argument(
+        "--tosa_level",
+        dest="tosa_level",
+        default="EIGHTK",
+        type=str,
+        help="A TOSA level defines operator parameter ranges that an implementation shall support."
+        "Config tosa_level for running the reference model only. Default is EIGHTK",
+    )
 
     args = parser.parse_args(argv)