[clang] [lld] [lld][ELF][clang][MTE] Add generic -z memtag-* options (PR #187055)

[Elia Geretto via cfe-commits]

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@@ -630,6 +630,27 @@ static ZicfissPolicy getZZicfiss(Ctx &ctx, opt::InputArgList &args) {
   return ret;
 }
 
+static int getZMemtagMode(Ctx &ctx, opt::InputArgList &args) {
+  auto ret = ELF::NT_MEMTAG_LEVEL_NONE;
+
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EliaGeretto wrote:

I will incorporate this change in the new PR.

https://github.com/llvm/llvm-project/pull/187055