[lld] [RISCV][LLD] Add RISCV zcmt optimise in linker relaxation (PR #77884)

[Kito Cheng via llvm-commits]

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@@ -340,6 +340,9 @@ defm use_android_relr_tags: BB<"use-android-relr-tags",
     "Use SHT_ANDROID_RELR / DT_ANDROID_RELR* tags instead of SHT_RELR / DT_RELR*",
     "Use SHT_RELR / DT_RELR* tags (default)">;
 
+def riscv_tbljal: FF<"riscv-tbljal">,
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kito-cheng wrote:

We have `--relax-gp`, so maybe `--relax-zcmt` or `--relax-tbljal`  consistency?

https://github.com/llvm/llvm-project/pull/77884