[ROCm] Add allreduce dispatcher for ROCm device#695

zejunchen-zejun wants to merge 1 commit intodev/QwenROCm/vllm:dev/Qwenfrom

zejun/add_dispatch_for_allreduce_for_dev_qwenROCm/vllm:zejun/add_dispatch_for_allreduce_for_dev_qwenCopy head branch name to clipboard