Add some gptq related args to quantize function (#2577)

Summary:
Stack from [ghstack](https://github.com/ezyang/ghstack) (oldest at bottom):
* __->__ https://github.com/pytorch/executorch/issues/2577

Test Plan:
Manully verified locally that the args passed through to quantize function
`python3 -m examples.models.llama2.export_llama -c stories110M.pt -p params.json -qmode 8da4w-gptq -X -d fp32 -G 2568 --calibration_tasks wikitext fads --calibration_seq_length 1288 --calibration_limit 5123`

Pull Request resolved: https://github.com/pytorch/executorch/pull/2577
python3 -m examples.models.llama2.export_llama -c stories110M.pt -p params.json -qmode 8da4w-gptq -X -d fp32 -G 2568 --calibration_tasks wikitext fads --calibration_seq_length 1288 --calibration_limit 5123

Reviewed By: Jack-Khuu

Differential Revision: D55250463

Pulled By: jerryzh168

fbshipit-source-id: bdf1299952c1f1010a39849bcf70f398bddfce06