[llvm] [llvm-objcopy] Add llvm-objcopy option --set-visibility-sym (PR #80872)

[Ilia Kuklin via llvm-commits]

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@@ -254,6 +254,21 @@ parseSetSectionFlagValue(StringRef FlagValue) {
   return SFU;
 }
 
+static Expected<uint8_t> parseVisibilityType(StringRef VisType) {
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kuilpd wrote:

I did copy the code from --new-symbol-visibility, so I can make a PR for it to use this new function too.

https://github.com/llvm/llvm-project/pull/80872