[Mobile][ARM]Fix bug to support PaddleSlim quantize trained model. test=mobile

mobile/src/framework/executor.cpp

@@ -255,11 +255,13 @@ void Executor<Device, T>::LoadMemory(void **data,
     case VARTYPE_TYPE_INT8:
       LoadMemInternal<int8_t>(
           reinterpret_cast<void **>(data_buf),
-          reinterpret_cast<void *>(tensor->mutable_data<T>()), tensor->numel());
+          reinterpret_cast<void *>(tensor->mutable_data<int8_t>()),
+          tensor->numel());
       break;
     case VARTYPE_TYPE_INT32:
-      LoadMemInternal<int>(reinterpret_cast<void **>(data_buf),
-                           reinterpret_cast<void *>(tensor->mutable_data<T>()),
+      LoadMemInternal<int>(
+          reinterpret_cast<void **>(data_buf),
+          reinterpret_cast<void *>(tensor->mutable_data<int>()),
           tensor->numel());
       break;
     default: