Gaudi: clean cuda/rocm code in hpu backend, enable flat_hpu (#3113)

* clean cuda/rocm code in hpu backend, enable flat_hpu

Signed-off-by: Wang, Yi A <yi.a.wang@intel.com>

* fix TP in pageattn

Signed-off-by: Wang, Yi A <yi.a.wang@intel.com>

* adjust block table in hpu to improve performance

Signed-off-by: Wang, Yi A <yi.a.wang@intel.com>

* enable all the model. not testet yet

Signed-off-by: Wang, Yi A <yi.a.wang@intel.com>

* use tensor cache in hpu graph to avoid replay issue

Signed-off-by: Wang, Yi A <yi.a.wang@intel.com>

* add moe support, fix qwen/mistral/mixtral crash

Signed-off-by: Wang, Yi A <yi.a.wang@intel.com>

* fix phimoe issue

Signed-off-by: Wang, Yi A <yi.a.wang@intel.com>

* gpt_bigcode could also go pageattn

Signed-off-by: Wang, Yi A <yi.a.wang@intel.com>

* enable dbrx remove some unused code

Signed-off-by: Wang, Yi A <yi.a.wang@intel.com>

* multi-modality initial PR

Signed-off-by: Wang, Yi A <yi.a.wang@intel.com>

* adjust warmup and enable vlm

Signed-off-by: Wang, Yi A <yi.a.wang@intel.com>

* fix incorrect output in qwen2 idefics if hpu graph is used

Signed-off-by: Wang, Yi A <yi.a.wang@intel.com>

* remove unused quantization code and enable awq/gptq int4

Signed-off-by: Wang, Yi A <yi.a.wang@intel.com>

* fix gptq issue

Signed-off-by: Wang, Yi A <yi.a.wang@intel.com>

* enable fp8

Signed-off-by: Wang, Yi A <yi.a.wang@intel.com>

* warmup prefill

remove model where pageattn is not used, set block table to None since it's not used

Signed-off-by: Wang, Yi A <yi.a.wang@intel.com>

* add warmup_decode

Signed-off-by: Wang, Yi A <yi.a.wang@intel.com>

* warmup decode

Signed-off-by: Wang, Yi A <yi.a.wang@intel.com>

* remove block_tables and prefill_cache_indices which will lead to dynamic shape

Signed-off-by: Wang, Yi A <yi.a.wang@intel.com>

* fix comment

Signed-off-by: Wang, Yi A <yi.a.wang@intel.com>

* missing gptj change...

Signed-off-by: Wang, Yi A <yi.a.wang@intel.com>

* fix some issue

Signed-off-by: Wang, Yi A <yi.a.wang@intel.com>

* remove torch.where to fix incorrect output in hpu graph model

Signed-off-by: Wang, Yi A <yi.a.wang@intel.com>

* match the latest vllm_extension ops

Signed-off-by: Wang, Yi A <yi.a.wang@intel.com>

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Signed-off-by: Wang, Yi A <yi.a.wang@intel.com>