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

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@@ -198,7 +198,8 @@ namespace clang {
       Float16,
       Float32,
       Float64,
-      BFloat16
+      BFloat16,
+      MFloat8
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SpencerAbson wrote:

(As discussed) I'm not sure that the work here relating to intrinsics is necessary for this patch, and it cannot be tested here - I will mark things that we can remove if this is we decide that this is case. 

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