[MTP][V1] Adapt mtp with graph mode in v1. (#1023)

Adapts deepseek mtp with torch air graph mode in v1.

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Signed-off-by: whx-sjtu <2952154980@qq.com>

vllm_ascend/worker/mtp_proposer_v1.py

@@ -4,7 +4,8 @@ from vllm.config import (VllmConfig, get_layers_from_vllm_config,
                          set_current_vllm_config)
 from vllm.forward_context import set_forward_context
 from vllm.model_executor.model_loader import get_model_loader
-from vllm.model_executor.model_loader.utils import set_default_torch_dtype
+from vllm.model_executor.model_loader.utils import (
+    process_weights_after_loading, set_default_torch_dtype)
 from vllm.v1.sample.metadata import SamplingMetadata
 
 from vllm_ascend.attention.mla_v1 import CommonAttentionMetadata
@@ -199,6 +200,8 @@ class MtpProposer:
             loader.get_all_weights(
                 self.vllm_config.speculative_config.draft_model_config,
                 self.model))
+        process_weights_after_loading(self.model, draft_model_config,
+                                      target_device)
 
 
 # TODO Using torch instead of triton may result in poor performance