NVServices: Address Feedback

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

@@ -35,9 +35,13 @@ enum class EventState {
 };
 
 struct IoctlCtrl {
+    // First call done to the servioce for services that call itself again after a call.
     bool fresh_call{true};
+    // Tells the Ioctl Wrapper that it must delay the IPC response and send the thread to sleep
     bool must_delay{};
+    // Timeout for the delay
     s64 timeout{};
+    // NV Event Id
     s32 event_id{-1};
 };