[tests] enable benchmark unit tests on XPU (#29284)

* add xpu for benchmark

* no auto_map

* use require_torch_gpu

* use gpu

* revert

* revert

* fix style

src/transformers/benchmark/benchmark_args.py

@@ -17,7 +17,14 @@
 from dataclasses import dataclass, field
 from typing import Tuple
 
-from ..utils import cached_property, is_torch_available, is_torch_tpu_available, logging, requires_backends
+from ..utils import (
+    cached_property,
+    is_torch_available,
+    is_torch_tpu_available,
+    is_torch_xpu_available,
+    logging,
+    requires_backends,
+)
 from .benchmark_args_utils import BenchmarkArguments
 
 
@@ -84,6 +91,9 @@ def _setup_devices(self) -> Tuple["torch.device", int]:
         elif is_torch_tpu_available():
             device = xm.xla_device()
             n_gpu = 0
+        elif is_torch_xpu_available():
+            device = torch.device("xpu")
+            n_gpu = torch.xpu.device_count()
         else:
             device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
             n_gpu = torch.cuda.device_count()