core: fix initialization in single core, sync GPU mode

src/yuzu/bootmanager.cpp

@@ -29,6 +29,7 @@
 #include "common/scm_rev.h"
 #include "common/settings.h"
 #include "core/core.h"
+#include "core/cpu_manager.h"
 #include "core/frontend/framebuffer_layout.h"
 #include "input_common/drivers/keyboard.h"
 #include "input_common/drivers/mouse.h"
@@ -73,6 +74,8 @@ void EmuThread::run() {
 
     gpu.ReleaseContext();
 
+    system.GetCpuManager().OnGpuReady();
+
     // Holds whether the cpu was running during the last iteration,
     // so that the DebugModeLeft signal can be emitted before the
     // next execution step