Add missing arguments in pipeline parallel generate method

Add two arguments: negative_prompt_ids and negative_prompt_attention_mask to generate method in pipeline_parallel.py.
These two arguments are available since transformers 4.32.0.

python/llm/src/ipex_llm/transformers/pipeline_parallel.py

@@ -245,6 +245,8 @@ def generate(
     synced_gpus: Optional[bool] = None,
     assistant_model: Optional["PreTrainedModel"] = None,
     streamer: Optional["BaseStreamer"] = None,
+    negative_prompt_ids: Optional[torch.Tensor] = None,
+    negative_prompt_attention_mask: Optional[torch.Tensor] = None,
     **kwargs,
 ):
     if hasattr(self, 'pipeline_parallel_stages') and self.pipeline_parallel_stages > 1:
@@ -287,6 +289,8 @@ def generate(
                              synced_gpus=synced_gpus,
                              assistant_model=assistant_model,
                              streamer=streamer,
+                             negative_prompt_ids=negative_prompt_ids,
+                             negative_prompt_attention_mask=negative_prompt_attention_mask,
                              **kwargs)
 
 GenerationMixin.generate = generate