[clang] [llvm] [AArch64] Reduce +sve2-aes to an alias of +sve-aes+sve2 (PR #114293)

[via cfe-commits]

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@@ -3887,7 +3887,7 @@ let Predicates = [HasSVE2orSME] in {
   defm WHILERW_PXX : sve2_int_while_rr<0b1, "whilerw", "int_aarch64_sve_whilerw">;
 } // End HasSVE2orSME
 
-let Predicates = [HasSVE2AES] in {
+let Predicates = [HasSVE2, HasSVEAES] in {
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SpencerAbson wrote:

I planned on saving the change to instruction predication for a later patch, as I saw this work as ensuring that this feature flag change had no semantic impact on the compiler. Though I'm happy to apply the new predication here too if preferred that is preferred? 

https://github.com/llvm/llvm-project/pull/114293