[clang] [clang] Use a 128-byte destructive interference size on Apple AArch64 (PR #208716)

[Aaron Ballman via cfe-commits]

https://github.com/AaronBallman approved this pull request.

LGTM assuming the Apple folks confirm the size values are what they'd like.

https://github.com/llvm/llvm-project/pull/208716