Update on "Add GPTQQuantizer"

Summary:
Implement GPTQQuantizer with the unified quantizer API

Test Plan:
python test/quantization/test_quant_api.py

Reviewers:

Subscribers:

Tasks:

Tags:

[ghstack-poisoned]

Author: jerryzh168

torchao/quantization/quant_api.py

@@ -204,6 +204,7 @@ def replace_conv2d_1x1(conv):
 
 from .GPTQ import lm_eval_available
 
+
 if lm_eval_available:
     from .GPTQ import (  # pyre-ignore[21]
         evaluate,