JitBase: Avoid System::GetInstance() and ppcState.

Source/Core/Core/PowerPC/JitInterface.cpp

@@ -54,20 +54,22 @@ void DoState(PointerWrap& p)
 }
 CPUCoreBase* InitJitCore(PowerPC::CPUCore core)
 {
+  auto& system = Core::System::GetInstance();
+
   switch (core)
   {
 #if _M_X86
   case PowerPC::CPUCore::JIT64:
-    g_jit = new Jit64();
+    g_jit = new Jit64(system);
     break;
 #endif
 #if _M_ARM_64
   case PowerPC::CPUCore::JITARM64:
-    g_jit = new JitArm64();
+    g_jit = new JitArm64(system);
     break;
 #endif
   case PowerPC::CPUCore::CachedInterpreter:
-    g_jit = new CachedInterpreter();
+    g_jit = new CachedInterpreter(system);
     break;
 
   default: