[diffusion][llm] macOS support (#19549)

Signed-off-by: Xiaodong Ye <yeahdongcn@gmail.com>
Co-authored-by: Mick <mickjagger19@icloud.com>

python/sglang/srt/configs/device_config.py

@@ -5,13 +5,15 @@ import torch
 
 logger = logging.getLogger(__name__)
 
+SUPPORTED_DEVICES = ["cuda", "xpu", "hpu", "cpu", "npu", "musa", "mps"]
+
 
 class DeviceConfig:
     device: Optional[torch.device]
     gpu_id: Optional[int]
 
     def __init__(self, device: str = "cuda", gpu_id: int = -1) -> None:
-        if device in ["cuda", "xpu", "hpu", "cpu", "npu", "musa"]:
+        if device in SUPPORTED_DEVICES:
             self.device_type = device
         else:
             raise RuntimeError(f"Not supported device type: {device}")