[clang] [llvm] [AArch64] Make user-visible Arm architecture version strings consistent (PR #98550)

[Tomas Matheson via llvm-commits]

https://github.com/tmatheson-arm approved this pull request.

LGTM. Seems like there are still many more inconsistencies that could be improved too.

https://github.com/llvm/llvm-project/pull/98550