[lld] [llvm] [LTO] Override TargetABI from module flags if present when creating T… (PR #126497)

[Kito Cheng via llvm-commits]

kito-cheng wrote:

Changes:
- Move test file from `lld/test/ELF/lto` to `llvm/test/LTO/RISCV`

https://github.com/llvm/llvm-project/pull/126497