[FEATURE] Add Droppath to the Xception model

[zhuoqun]

Has the author considered adding droppath to the Xception model?

[Ross Wightman]

@lizhuoq it's not too much work to add to xception_aligned https://github.com/huggingface/pytorch-image-models/blob/main/timm/models/xception_aligned.py

PR would be welcome, should be doable following examples from other models, I'm pretty behind on some other projects right now.

[zhuoqun]

@rwightman Thank you for your reply amidst your busy schedule. I will try this PR.

[Ross Wightman]

all good