Add CONST testing to Numpy refmodel tests

Signed-off-by: Jeremy Johnson <jeremy.johnson@arm.com>
Change-Id: Id32f3b7c287c9e8b0fd42dd96922be5a255598e2
diff --git a/verif/generator/tosa_verif_build_tests.py b/verif/generator/tosa_verif_build_tests.py
index fee551b..2fafacb 100644
--- a/verif/generator/tosa_verif_build_tests.py
+++ b/verif/generator/tosa_verif_build_tests.py
@@ -192,6 +192,13 @@
         help="set a particular zero point for all valid positive tests",
     )
 
+    parser.add_argument(
+        "--dump-const-tensors",
+        dest="dump_consts",
+        action="store_true",
+        help="output const tensors as numpy files for inspection",
+    )
+
     args = parser.parse_args(argv)
 
     return args