Fix jscvt detection

Author: efriedma-quic

llvm/lib/TargetParser/Host.cpp

@@ -2314,7 +2314,7 @@ StringMap<bool> sys::getHostCPUFeatures() {
       IsProcessorFeaturePresent(PF_ARM_V81_ATOMIC_INSTRUCTIONS_AVAILABLE);
   Features["dotprod"] =
       IsProcessorFeaturePresent(PF_ARM_V82_DP_INSTRUCTIONS_AVAILABLE);
-  Features["jscvt"] =
+  Features["jsconv"] =
       IsProcessorFeaturePresent(PF_ARM_V83_JSCVT_INSTRUCTIONS_AVAILABLE);
   Features["rcpc"] =
       IsProcessorFeaturePresent(PF_ARM_V83_LRCPC_INSTRUCTIONS_AVAILABLE);