6d17cb833d
rustc_target: ppc64 target string fixes for LLVM 20 LLVM continues to clean these up, and we continue to make this consistent. This is similar to9caced7bad,e985396145, anda10e744faf. ```@rustbot``` label: +llvm-main
rustc_target contains some very low-level details that are
specific to different compilation targets and so forth.
For more information about how rustc works, see the rustc dev guide.