chore: import upstream snapshot with attribution

paddle/fluid/framework/custom_raw_op_kernel_func.h

@@ -0,0 +1,27 @@
+// Copyright (c) 2022 PaddlePaddle Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#pragma once
+
+#include "paddle/fluid/framework/operator.h"
+#include "paddle/phi/api/ext/op_meta_info.h"
+
+// NOTE(zengjinle): this macro is only for internal usage. Commonly, users
+// should not use this macro.
+#define __PD_DEFINE_RAW_OP_KERNEL_FUNC(op_name, ctx)                      \
+  STATIC_ASSERT_GLOBAL_NAMESPACE(                                         \
+      __reg_raw_op_kernel_func__##op_name,                                \
+      "__PD_DEFINE_RAW_KERNEL_FUNC must be called in global namespace."); \
+  extern "C" void PD_##op_name##_raw_op_kernel_func(                      \
+      const ::paddle::framework::ExecutionContext& ctx)