x64CPUDetect: Add detection for AMD Zen architecture

Source/Core/Common/CPUDetect.h

@@ -54,6 +54,7 @@ struct CPUInfo
   bool bLAHFSAHF64 = false;
   bool bLongMode = false;
   bool bAtom = false;
+  bool bZen = false;
 
   // ARMv8 specific
   bool bFP = false;

Source/Core/Common/x64CPUDetect.cpp

@@ -118,6 +118,9 @@ void CPUInfo::Detect()
         (model == 0x1C || model == 0x26 || model == 0x27 || model == 0x35 || model == 0x36 ||
          model == 0x37 || model == 0x4A || model == 0x4D || model == 0x5A || model == 0x5D))
       bAtom = true;
+    // Detect AMD Zen (all models)
+    if (family == 23)
+      bZen = true;
     logical_cpu_count = (cpu_id[1] >> 16) & 0xFF;
     ht = (cpu_id[3] >> 28) & 1;