Convert formatting to use ruff instead of yapf + isort (#26247)

Signed-off-by: Harry Mellor <19981378+hmellor@users.noreply.github.com>

vllm/config/device.py

@@ -45,20 +45,21 @@ class DeviceConfig:
         # the device/platform information will be summarized
         # by torch/vllm automatically.
         factors: list[Any] = []
-        hash_str = hashlib.md5(str(factors).encode(),
-                               usedforsecurity=False).hexdigest()
+        hash_str = hashlib.md5(str(factors).encode(), usedforsecurity=False).hexdigest()
         return hash_str
 
     def __post_init__(self):
         if self.device == "auto":
             # Automated device type detection
             from vllm.platforms import current_platform
+
             self.device_type = current_platform.device_type
             if not self.device_type:
                 raise RuntimeError(
                     "Failed to infer device type, please set "
                     "the environment variable `VLLM_LOGGING_LEVEL=DEBUG` "
-                    "to turn on verbose logging to help debug the issue.")
+                    "to turn on verbose logging to help debug the issue."
+                )
         else:
             # Device type is assigned explicitly
             if isinstance(self.device, str):