driver: Properly initialize button.
driver: Properly initialize button.

vlstill/ttk4145,vlstill/ttk4145,superboy0712/realtime,vlstill/ttk4145,superboy0712/realtime,superboy0712/realtime,vlstill/ttk4145,vlstill/ttk4145,superboy0712/realtime,superboy0712/realtime,superboy0712/realtime,vlstill/ttk4145