pytorch

cdab6c8d - [PT2E][Quant] Support specifying None for obs_or_fq_ctr in target_dtype_info (#99071)

[PT2E][Quant] Support specifying None for obs_or_fq_ctr in target_dtype_info (#99071) It is cleaner for quantizer to say what does not need observation instead of putting fp32 observers. This diff add support for that by checking if target_dtype_info contains none for specific observers and if so skip inserting observers for those. Differential Revision: [D44971357](https://our.internmc.facebook.com/intern/diff/D44971357/) Pull Request resolved: https://github.com/pytorch/pytorch/pull/99071 Approved by: https://github.com/jerryzh168