[clang] [CLANG][AArch64]Add Neon vectors for mfloat8_t (PR #99865)

[via cfe-commits]

================
@@ -778,7 +780,7 @@ Type Type::fromTypedefName(StringRef Name) {
     T.Kind = Poly;
   } else if (Name.consume_front("bfloat")) {
     T.Kind = BFloat16;
-  } else {
----------------
SpencerAbson wrote:

unrelated change here - also the source of the clang-format peril!

https://github.com/llvm/llvm-project/pull/99865