[Chore] Separate out vllm.utils.platform_utils.py (#27374)

Signed-off-by: Jonathan <chenleejonathan@gmail.com>

vllm/usage/usage_lib.py

@@ -21,7 +21,7 @@ import torch
 import vllm.envs as envs
 from vllm.connections import global_http_connection
 from vllm.logger import init_logger
-from vllm.utils import cuda_get_device_properties
+from vllm.utils.platform_utils import cuda_get_device_properties
 from vllm.utils.torch_utils import cuda_device_count_stateless
 from vllm.version import __version__ as VLLM_VERSION