[llvm] [HashRecognize] Rename ByteOrderSwapped to IsBigEndian (NFC) (PR #206243)

[Piotr Fusik via llvm-commits]

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

LGTM
But what do you mean by "the byte order is normally swapped on big-endian machines" ?

https://github.com/llvm/llvm-project/pull/206243