[refact] unified soc_version code (#4359)

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

Currently, there are two paths to judge the chip type in code,
`get_ascend_soc_version` use `get_soc_version` api in torch_npu, and
`is_310p` `use _build_info.__soc_version__`, which generate when
install. We need to unify the two paths.

We need to unify these codes based on the following points:

1. We need to ensure consistency in chip type judgment between compiling
and running states;
2. In compiling state, we need chip type to complete op's compilation,
but in running state, we only need device
type(910B/910_93/310P/910_95/etc) to make code branch judgement;
3. In compiling state, torch_npu may not have been installed yet, so we
can't use torch_npu's api.

Based on the above points, we have made the following changes:

1. When user set env `SOC_VERSION`, use it; when not set, query
soc_version by `npu-smi`;
2. generate device_type based on soc_version when compiling, and write
`__device_type__` instead of `__soc_version__` in `_build_info.py`;
3. In running state, use `__device_type__` to judge code branch.

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

When not set env `SOC_VERSION`, it will not be `ASCEND910B1` by default,
we will query soc_version by `npu-smi`. And env `SOC_VERSION` must be in
the list `soc_to_device` in `setup.py`.

- vLLM version: v0.11.0
- vLLM main:
2918c1b49c

Signed-off-by: zzzzwwjj <1183291235@qq.com>

tests/ut/ops/test_token_dispatcher.py

@@ -22,7 +22,7 @@ import torch
 from tests.ut.base import TestBase
 
 from vllm_ascend.ops.fused_moe.token_dispatcher import (  # isort: skip
-    AscendSocVersion, TokenDispatcherWithAll2AllV,
+    AscendDeviceType, TokenDispatcherWithAll2AllV,
     TokenDispatcherWithAllGather, TokenDispatcherWithMC2)
 
 
@@ -50,10 +50,10 @@ class TestTokenDispatcherWithMC2(TestBase):
             return_value=self.forward_context)
         self.forward_context_patch.start()
 
-        # Mock get_ascend_soc_version()
+        # Mock get_ascend_device_type()
         self.ascend_soc_version_patch = patch(
-            "vllm_ascend.ops.fused_moe.token_dispatcher.get_ascend_soc_version",
-            return_value=AscendSocVersion.A3)
+            "vllm_ascend.ops.fused_moe.token_dispatcher.get_ascend_device_type",
+            return_value=AscendDeviceType._910_93)
         self.ascend_soc_version_patch.start()
 
         kwargs = {"with_quant": False, "top_k": 8, "num_experts": 128}