[BugFix] fix qwen2.5vl quant bug (#3426)

### What this PR does / why we need it?
This PR fixes issues:
1. Resolve the issue of qwen2.5-VL quantization service startup failure:
AttributeError, 'Parameter' object has no attribute 'weight_loader'.

### Does this PR introduce _any_ user-facing change?
None.

### How was this patch tested?
- ci & e2e
- vLLM version: v0.11.0
- vLLM main: https://github.com/vllm-project/vllm/commit/v0.11.0

Signed-off-by: elilzhu <2435754260@qq.com>

vllm_ascend/quantization/quant_config.py

@@ -33,6 +33,7 @@ from vllm.model_executor.layers.quantization.base_config import (
 from vllm.model_executor.layers.quantization.kv_cache import BaseKVCacheMethod
 from vllm.model_executor.layers.vocab_parallel_embedding import (
     UnquantizedEmbeddingMethod, VocabParallelEmbedding)
+from vllm.model_executor.parameter import PerTensorScaleParameter
 from vllm.model_executor.utils import set_weight_attrs
 
 from vllm_ascend.distributed.parallel_state import (get_mlp_tp_group,
@@ -250,6 +251,7 @@ class AscendLinearMethod(LinearMethodBase):
         **extra_weight_attrs,
     ) -> None:
         output_size_per_partition = sum(output_partition_sizes)
+        weight_loader = extra_weight_attrs.get("weight_loader")
 
         weight_dict = self.quant_method.get_weight(input_size_per_partition,
                                                    output_size_per_partition,
@@ -262,7 +264,8 @@ class AscendLinearMethod(LinearMethodBase):
 
         pertensor_dict = self.quant_method.get_pertensor_param(params_dtype)
         for pertensor_name, pertensor_param in pertensor_dict.items():
-            param = torch.nn.Parameter(pertensor_param, requires_grad=False)
+            param = PerTensorScaleParameter(data=pertensor_param,
+                                            weight_loader=weight_loader)
             # disable warning
             param.ignore_warning = True
             layer.register_parameter(pertensor_name, param)