[llvm] [llvm-readobj] enable demangle option for the xcoff object file (PR #78455)

[zhijian lin via llvm-commits]

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@@ -61,6 +61,11 @@ file formats.
   Dump decompressed section content when used with ``-x`` or ``-p``.
   If the section(s) are not compressed, they are displayed as is.
 
+.. option:: --demangle, -C
+
+ Display demangled symbol names in the output; the option only is for ELF and
+ XCOFF file format.
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diggerlin wrote:

thanks

https://github.com/llvm/llvm-project/pull/78455