docs/zh_CN: add dt kernel-api translation

Translte .../devicetree/kernel-api.rst into Chinese.
Signed-off-by: Yanteng Si <siyanteng@loongson.cn>
Reviewed-by: Alex Shi <alexs@kernel.org>
Link: https://lore.kernel.org/r/35fd1b5801d7191e078937908008115f8949aac3.1662449105.git.siyanteng@loongson.cnSigned-off-by: Jonathan Corbet <corbet@lwn.net>

Documentation/translations/zh_CN/devicetree/index.rst

@@ -24,10 +24,7 @@ Open Firmware 和 Devicetree
 
    usage-model
    of_unittest
-
-Todolist:
-
-*   kernel-api
+   kernel-api
 
 Devicetree Overlays
 ===================

Documentation/translations/zh_CN/devicetree/kernel-api.rst

+.. SPDX-License-Identifier: GPL-2.0
+.. include:: ../disclaimer-zh_CN.rst
+
+:Original: Documentation/Devicetree/kernel-api.rst
+
+:翻译:
+
+ 司延腾 Yanteng Si <siyanteng@loongson.cn>
+
+:校译:
+
+
+=================
+内核中的设备树API
+=================
+
+核心函数
+--------
+
+该API在以下内核代码中:
+
+drivers/of/base.c
+
+include/linux/of.h
+
+drivers/of/property.c
+
+include/linux/of_graph.h
+
+drivers/of/address.c
+
+drivers/of/irq.c
+
+drivers/of/fdt.c
+
+驱动模型函数
+------------
+
+该API在以下内核代码中:
+
+include/linux/of_device.h
+
+drivers/of/device.c
+
+include/linux/of_platform.h
+
+drivers/of/platform.c
+
+覆盖和动态DT函数
+----------------
+
+该API在以下内核代码中:
+
+drivers/of/resolver.c
+
+drivers/of/dynamic.c
+
+drivers/of/overlay.c