vision model use tp number of gpu

[irexyc]

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Modification

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[lvhan028]

May update after #1845 (phi3-vision)

[RunningLeon]

@irexyc may fix conflicts with main branch.

[AllentDan]

lmdeploy serve api_server /nvme/shared_data/Yi/Yi-VL-6B --tp 2 failed
TypeError: argument of type 'NoneType' is not iterable

[AllentDan]

Tested OK with following models:

• yi-vl-6b
• qwen-vl
• mini-gemini
• llava
• internvl

[RunningLeon]

LGTM