docs/zh_CN: Add rust arch-support Chinese translation

Translate .../rust/arch-support.rst into Chinese.
Signed-off-by: Yanteng Si <siyanteng@loongson.cn>
Reviewed-by: Gary Guo <gary@garyguo.net>
Reviewed-by: Alex Shi <alexs@kernel.org>
Reviewed-by: Wu XiangCheng <bobwxc@email.cn>
Link: https://lore.kernel.org/r/1f5b1d1e4f84bf105ab5bed146652937a74e9b69.1666959529.git.siyanteng@loongson.cnSigned-off-by: Jonathan Corbet <corbet@lwn.net>

Documentation/translations/zh_CN/rust/arch-support.rst

+.. SPDX-License-Identifier: GPL-2.0
+.. include:: ../disclaimer-zh_CN.rst
+
+:Original: Documentation/rust/arch-support.rst
+
+:翻译:
+
+ 司延腾 Yanteng Si <siyanteng@loongson.cn>
+
+架构支持
+========
+
+目前，Rust编译器（``rustc``）使用LLVM进行代码生成，这限制了可以支持的目标架构。此外，对
+使用LLVM/Clang构建内核的支持也有所不同（请参见 Documentation/kbuild/llvm.rst ）。这
+种支持对于使用 ``libclang`` 的 ``bindgen`` 来说是必需的。
+
+下面是目前可以工作的架构的一般总结。支持程度与 ``MAINTAINERS`` 文件中的``S`` 值相对应:
+
+============  ================  ==============================================
+架构          支持水平          限制因素
+============  ================  ==============================================
+``x86``       Maintained        只有 ``x86_64``
+============  ================  ==============================================

Documentation/translations/zh_CN/rust/index.rst

@@ -18,10 +18,7 @@ Rust
     quick-start
     general-information
     coding-guidelines
-
-TODOList:
-
-*    arch-support
+    arch-support
 
 .. only::  subproject and html