SingleCore: Move Host Timing from a sepparate thread to main cpu thread.

src/core/hle/kernel/kernel.cpp

@@ -303,7 +303,7 @@ struct KernelCore::Impl {
         }
         const Kernel::Scheduler& sched = cores[result.host_handle].Scheduler();
         const Kernel::Thread* current = sched.GetCurrentThread();
-        if (current != nullptr) {
+        if (current != nullptr && !current->IsPhantomMode()) {
             result.guest_handle = current->GetGlobalHandle();
         } else {
             result.guest_handle = InvalidHandle;

src/core/hle/kernel/thread.h

@@ -597,6 +597,14 @@ public:
         is_continuous_on_svc = is_continuous;
     }
 
+    bool IsPhantomMode() const {
+        return is_phantom_mode;
+    }
+
+    void SetPhantomMode(bool phantom) {
+        is_phantom_mode = phantom;
+    }
+
 private:
     friend class GlobalScheduler;
     friend class Scheduler;
@@ -699,6 +707,7 @@ private:
     bool is_continuous_on_svc = false;
 
     bool will_be_terminated = false;
+    bool is_phantom_mode = false;
 
     bool was_running = false;