Bugfix: pass device type for autocast.

xora/pipelines/pipeline_xora_video.py

@@ -1015,7 +1015,7 @@ class XoraVideoPipeline(DiffusionPipeline):
                             "Mixed precision is not supported yet on XLA devices."
                         )
 
-                    context_manager = torch.autocast(device, dtype=torch.bfloat16)
+                    context_manager = torch.autocast(device.type, dtype=torch.bfloat16)
                 else:
                     context_manager = nullcontext()  # Dummy context manager