[NFC][X86] Add missing CPUID related changes for AMX-COMPLEX.

Author: FreddyLeaf

llvm/lib/TargetParser/Host.cpp

@@ -1755,6 +1755,7 @@ bool sys::getHostCPUFeatures(StringMap<bool> &Features) {
   Features["avxifma"]    = HasLeaf7Subleaf1 && ((EAX >> 23) & 1) && HasAVXSave;
   Features["avxvnniint8"] = HasLeaf7Subleaf1 && ((EDX >> 4) & 1) && HasAVXSave;
   Features["avxneconvert"] = HasLeaf7Subleaf1 && ((EDX >> 5) & 1) && HasAVXSave;
+  Features["amx-complex"] = HasLeaf7Subleaf1 && ((EDX >> 8) & 1) && HasAMXSave;
   Features["prefetchi"]  = HasLeaf7Subleaf1 && ((EDX >> 14) & 1);
 
   bool HasLeafD = MaxLevel >= 0xd &&