[Feat] Add npugraph_ex enablement logging (#7574)

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

- Replace local logging with vllm.logger for consistency
- Add info log when enable_npugraph_ex is enabled
- Add info log when enable_static_kernel is enabled
- Unify logging message format to use config switch names consistently
- This helps users understand which compilation optimizations are active

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

Yes. Users will now see informational log messages when
enable_npugraph_ex or enable_static_kernel features are enabled,
providing better visibility into the compilation optimization settings
being used.

### How was this patch tested?

- Code passes all pre-commit hooks (ruff check, ruff format, codespell,
typos)
- Follows project coding conventions and style guidelines
- Logger import matches the pattern used elsewhere in the codebase

Signed-off-by: p00465316 <panchao13@huawei.com>
Co-authored-by: p00465316 <panchao13@huawei.com>

vllm_ascend/compilation/compiler_interface.py

@@ -17,7 +17,6 @@
 #
 import copy
 import functools
-import logging
 from collections.abc import Callable
 from typing import Any
 
@@ -30,12 +29,11 @@ from torch.fx import GraphModule
 from vllm.compilation.compiler_interface import CompilerInterface
 from vllm.config import VllmConfig
 from vllm.config.utils import Range
+from vllm.logger import logger
 
 from vllm_ascend.ascend_config import AscendCompilationConfig, get_ascend_config
 from vllm_ascend.utils import COMPILATION_PASS_KEY
 
-logger = logging.getLogger(__name__)
-
 
 def compile_fx(graph: GraphModule, example_inputs: list, inner_compile: Callable, decompositions: dict) -> Callable:
     recursive_compile_fx = functools.partial(compile_fx, inner_compile=inner_compile, decompositions=decompositions)
@@ -91,6 +89,9 @@ def npugraph_ex_compile(
     # and cause copy_between_host_and_device error.
     config.debug.aclgraph.disable_reinplace_inplaceable_ops_pass = True
     if ascend_compilation_config.enable_static_kernel:
+        logger.info(
+            "enable_static_kernel is enabled, static shape kernel will be used to accelerate aclgraph execution."
+        )
         config.experimental_config.aclgraph._aclnn_static_shape_kernel = True
         # According to the cudagraph_capture_size configuration, set the shapes
         # that can trigger the compilation of static kernel. If this configuration is
@@ -158,6 +159,7 @@ class AscendCompiler(CompilerInterface):
 
         ascend_compilation_config = get_ascend_config().ascend_compilation_config
         if ascend_compilation_config.enable_npugraph_ex:
+            logger.info("enable_npugraph_ex is enabled, which will bring graph compilation optimization.")
             assert hasattr(self, "vllm_config")
             return npugraph_ex_compile(
                 graph, example_inputs, compiler_config, self.vllm_config, ascend_compilation_config, compile_range, key