[clang] [Clang][AArch64]Add FP8 ACLE macros implementation (PR #140591)

[Paul Walker via cfe-commits]

================
@@ -1046,6 +1082,29 @@ bool AArch64TargetInfo::handleTargetFeatures(std::vector<std::string> &Features,
       HasSVEB16B16 = true;
       HasSMEB16B16 = true;
     }
+
+    if (Feature == "+fp8")
+      HasFP8 = true;
+    if (Feature == "+fp8fma")
----------------
paulwalker-arm wrote:

`fp8...` feature extensions should also set `HasFP8`?

https://github.com/llvm/llvm-project/pull/140591