Input: ati_remote - add missing input_sync()

When emulating button toggle drivers need to send input_sync()
between 'down' and 'up' events, otherwise some users might miss
keypress because device's state is only considered finalized
after EV_SYN/SYN_REPORT is received.
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

drivers/usb/input/ati_remote.c

@@ -489,6 +489,7 @@ static void ati_remote_input_report(struct urb *urb, struct pt_regs *regs)
 		input_regs(dev, regs);
 		input_event(dev, ati_remote_tbl[index].type,
 			ati_remote_tbl[index].code, 1);
+		input_sync(dev);
 		input_event(dev, ati_remote_tbl[index].type,
 			ati_remote_tbl[index].code, 0);
 		input_sync(dev);