[main] support cpu binding (#3546)

### What this PR does / why we need it?

Currently, in the piecewise of aclgraph, the model will be in eagle mode
in attention, which will cause abnormal allreduce latency of O matrix.
The reason is that cpu resources will be preempted in eagle mode. So I
hope to temporarily add cpu binding to vllm-ascend.

### Does this PR introduce _any_ user-facing change?

No

### How was this patch tested?

CI passed with new existing test.

- vLLM version: v0.11.0rc3
- vLLM main: https://github.com/vllm-project/vllm/commit/v0.11.0

Signed-off-by: GDzhu1 <809721801@qq.com>

vllm_ascend/ascend_config.py

@@ -101,6 +101,8 @@ class AscendConfig:
                 raise AssertionError(
                     "oproj_tensor_parallel_size is only supported in pd scenario and can only be used in D node."
                 )
+        self.enable_cpu_binding = additional_config.get(
+            "enable_cpu_binding", False)
         self.pd_tp_ratio = 1
         self.pd_head_ratio = 1
         self.num_head_replica = 1