BTN_FORWARD
evdev_support_key(evdev_a, BTN_FORWARD);
evdev_push_key(sc->evdev_a, BTN_FORWARD,
BTN_FORWARD,
BTN_FORWARD,
[BTN_FORWARD] = "BTN_FORWARD",
{ .name = "BTN_FORWARD", .value = BTN_FORWARD },
BTN_FORWARD,