[platforms] enable platform plugins (#11602)

Signed-off-by: youkaichao <youkaichao@gmail.com>

vllm/usage/usage_lib.py

@@ -17,7 +17,6 @@ import torch
 
 import vllm.envs as envs
 from vllm.connections import global_http_connection
-from vllm.platforms import current_platform
 from vllm.version import __version__ as VLLM_VERSION
 
 _config_home = envs.VLLM_CONFIG_ROOT
@@ -152,6 +151,7 @@ class UsageMessage:
                            usage_context: UsageContext,
                            extra_kvs: Dict[str, Any]) -> None:
         # Platform information
+        from vllm.platforms import current_platform
         if current_platform.is_cuda_alike():
             device_property = torch.cuda.get_device_properties(0)
             self.gpu_count = torch.cuda.device_count()