[llvm] [RISCV][MC] Prioritize features in MultiMismatchFallback (PR #215737)

[Garvit Gupta via llvm-commits]

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@@ -1866,6 +1866,15 @@ class AsmParser {
   // messages.
   bit ReportMultipleNearMisses = false;
 
+  // PrioritizeFeatureInMultipleNearMisses -
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quic-garvgupt wrote:

Pls add a logic to error out if `PrioritizeFeatureInMultipleNearMisses` is set without setting `ReportMultipleNearMisses`

https://github.com/llvm/llvm-project/pull/215737