NVHost_Ctrl: Force wait if the gpu falls behind too long.

src/core/hle/service/nvdrv/nvdrv.h

@@ -49,6 +49,8 @@ struct EventInterface {
     std::array<EventState, MaxNvEvents> status{};
     // Tells if an NVEvent is registered or not
     std::array<bool, MaxNvEvents> registered{};
+    // Tells the NVEvent that it has failed.
+    std::array<bool, MaxNvEvents> failed{};
     // When an NVEvent is waiting on GPU interrupt, this is the sync_point
     // associated with it.
     std::array<u32, MaxNvEvents> assigned_syncpt{};