[compiler-rt] CompilerRT: Normalize COMPILER_RT_DEFAULT_TARGET_TRIPLE (PR #88835)

[YunQiang Su via llvm-commits]

wzssyqa wrote:

@mstorsjo @DavidSpickett can you have a try to use `-print-target-triple` instead of `-print-effective-triple`?

https://github.com/llvm/llvm-project/pull/88835