[XPU] GetExecStream supports XPU (#52466)

paddle/fluid/inference/api/analysis_predictor.cc

@@ -502,14 +502,18 @@ void *AnalysisPredictor::GetExecStream() const {
       return reinterpret_cast<const phi::GPUContext *>(pool.Get(place_))
           ->stream();
     }
-  } else {
-    return nullptr;
   }
-  return nullptr;
-#else
+#endif
+#if defined(PADDLE_WITH_XPU)
+  if (place_.GetType() == phi::AllocationType::XPU) {
+    paddle::platform::DeviceContextPool &pool =
+        paddle::platform::DeviceContextPool::Instance();
+    return reinterpret_cast<const phi::XPUContext *>(pool.Get(place_))
+        ->stream();
+  }
+#endif
   // TODO(inference): Support other backends.
   return nullptr;
-#endif
 }
 
 const void *AnalysisPredictor::GetDeviceContexts() const {