[BugFix] Minor: logger import in attention backend (#13706)

Signed-off-by: Andy Lo <andy@mistral.ai>

vllm/attention/backends/utils.py

@@ -12,12 +12,12 @@ from vllm import envs
 from vllm.attention import (AttentionMetadata, AttentionMetadataBuilder,
                             AttentionState)
 from vllm.attention.backends.abstract import AttentionType
-from vllm.logger import logging
+from vllm.logger import init_logger
 from vllm.multimodal import MultiModalPlaceholderMap
 from vllm.platforms import current_platform
 from vllm.utils import async_tensor_h2d, make_tensor_with_pad
 
-logger = logging.getLogger(__name__)
+logger = init_logger(__name__)
 
 if TYPE_CHECKING:
     from vllm.worker.model_runner_base import ModelRunnerBase