[CPU] Null backend enough for GPU trace viewing

src/xenia/gpu/trace_dump.cc

@@ -95,8 +95,8 @@ bool TraceDump::Setup() {
   // Create the emulator but don't initialize so we can setup the window.
   emulator_ = std::make_unique<Emulator>("", "", "", "");
   X_STATUS result = emulator_->Setup(
-      nullptr, nullptr, nullptr, [this]() { return CreateGraphicsSystem(); },
-      nullptr);
+      nullptr, nullptr, false, nullptr,
+      [this]() { return CreateGraphicsSystem(); }, nullptr);
   if (XFAILED(result)) {
     XELOGE("Failed to setup emulator: {:08X}", result);
     return false;