[lld] [LLD][ELF][RISCV][Zicfilp][Zicfiss] Support `-z zicfilp=` and `-z zicfiss=` to force enable/disable features (PR #143114)

[Fangrui Song via llvm-commits]

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@@ -2981,6 +3039,23 @@ static void readSecurityNotes(Ctx &ctx) {
   else if (ctx.arg.zGcs == GcsPolicy::Never)
     ctx.arg.andFeatures &= ~GNU_PROPERTY_AARCH64_FEATURE_1_GCS;
 
+  // Force enable/disable Zicfilp
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MaskRay wrote:

End with a full stop.

https://github.com/llvm/llvm-project/pull/143114