[Fix]: Adding support for symmetric_no_clipping_error on latest main

Author: gausah-arm

LICENSE

@@ -1,4 +1,6 @@
 Copyright 2023 Meta
+All contributions by Arm:
+Copyright (c) 2024-2025 Arm Limited and/or its affiliates
 
 Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
 

torchao/quantization/quant_api.py

@@ -1,6 +1,6 @@
 # Copyright (c) Meta Platforms, Inc. and affiliates.
+# Copyright 2024-2025 Arm Limited and affiliates.
 # All rights reserved.
-
 # This source code is licensed under the license found in the
 # LICENSE file in the root directory of this source tree.
 
@@ -862,8 +862,9 @@ def __post_init__(self):
         assert self.weight_mapping_type in [
             MappingType.ASYMMETRIC,
             MappingType.SYMMETRIC,
+            MappingType.SYMMETRIC_NO_CLIPPING_ERR,
         ], (
-            f"weight_mapping_type must be MappingType.ASYMMETRIC or MappingType.SYMMETRIC, but got {self.weight_mapping_type}"
+            f"weight_mapping_type must be MappingType.ASYMMETRIC or MappingType.SYMMETRIC or MappingType.SYMMETRIC_NO_CLIPPING_ERR, but got {self.weight_mapping_type}"
         )
         assert self.act_mapping_type in [
             MappingType.ASYMMETRIC,