[WIP] enable BNB HFQuantizer on xpu
Author: faaany
Pull request: yes

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Fixes # (issue)


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Comments:
Thanks for the PR @faaany, I'll let Titus decide but I think it is better to have only one PR to test the multi-backend for bnb ! Since the changes here are very simple, it should be pretty easy to integrate it. Maybe in this PR ? https://github.com/huggingface/transformers/pull/31098#issuecomment-2267995701 cc @Titus-von-Koeller 

Hi @SunMarc, @ArthurZucker , sure. If we merge the change into #31098 , I can close this one. 

> If we merge the change into https://github.com/huggingface/transformers/pull/31098, I can close this one.

Yes, @faaany that would be best! You could submit a PR to @jiqing-fengs PR to integrate these changes. Would that still be possible today, as I'm in the process of finalizing testing on these matters?

I sent an invite to your email to the #bitsandbytes-intel-collab channel to coordinate and discuss as we go along. Please join.

Closing this in favor of a unified PR in #31098.