DSPCore: Rename JIT core type to JIT64

This changes the identifier to represent the x86-64 DSP emitter. If any
other JITs for the DSP are added in the future, they all can't use the
same generic identifier.

Source/Core/Core/DSP/DSPCore.cpp

@@ -170,7 +170,7 @@ bool DSPCore_Init(const DSPInitOptions& opts)
   Common::WriteProtectMemory(g_dsp.iram, DSP_IRAM_BYTE_SIZE, false);
 
   // Initialize JIT, if necessary
-  if (opts.core_type == DSPInitOptions::CoreType::JIT)
+  if (opts.core_type == DSPInitOptions::CoreType::JIT64)
     g_dsp_jit = std::make_unique<JIT::x64::DSPEmitter>();
 
   g_dsp_cap.reset(opts.capture_logger);

Source/Core/Core/DSP/DSPCore.h

@@ -329,13 +329,13 @@ struct DSPInitOptions
   std::array<u16, DSP_COEF_SIZE> coef_contents;
 
   // Core used to emulate the DSP.
-  // Default: JIT.
+  // Default: JIT64.
   enum class CoreType
   {
     Interpreter,
-    JIT,
+    JIT64,
   };
-  CoreType core_type = CoreType::JIT;
+  CoreType core_type = CoreType::JIT64;
 
   // Optional capture logger used to log internal DSP data transfers.
   // Default: dummy implementation, does nothing.

Source/Core/Core/HW/DSPLLE/DSPLLE.cpp

@@ -156,7 +156,7 @@ static bool FillDSPInitOptions(DSPInitOptions* opts)
   opts->core_type = DSPInitOptions::CoreType::Interpreter;
 #ifdef _M_X86
   if (SConfig::GetInstance().m_DSPEnableJIT)
-    opts->core_type = DSPInitOptions::CoreType::JIT;
+    opts->core_type = DSPInitOptions::CoreType::JIT64;
 #endif
 
   if (SConfig::GetInstance().m_DSPCaptureLog)