skip XPU for dataloader CPU only unit test (pytorch#159811)

Fixes [pytorch#159802](pytorch#159802)

Pull Request resolved: pytorch#159811
Approved by: https://github.com/izaitsevfb

Author: divyanshk

test/test_dataloader.py

@@ -3133,6 +3133,8 @@ def test_pin_memory(self):
             self.assertTrue(sample["a_tensor"].is_pinned())
             self.assertTrue(sample["another_dict"]["a_number"].is_pinned())
 
+    @skipIfXpu
+    @skipIfRocm
     @unittest.skipIf(TEST_CUDA, "Test for when CUDA is not available")
     def test_pin_memory_no_cuda(self):
         loader = DataLoader(self.dataset, batch_size=2, pin_memory=True)