[lld] [ELF, test] Add test for R_AARCH64_* implicit addends (PR #87733)

[Ramkumar Ramachandra via llvm-commits]

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+## Test certain REL relocation types generated by legacy armasm.
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artagnon wrote:

REQUIRES: aarch64?

https://github.com/llvm/llvm-project/pull/87733