Function evdev_sys::libevdev_set_device_log_function

pub unsafe extern "C" fn libevdev_set_device_log_function(
    ctx: *mut libevdev, 
    logfunc: extern "C" fn(_: *const libevdev, _: c_int, _: *mut c_void, _: *const c_char, _: c_int, _: *const c_char, _: *const c_char, _: va_list), 
    priority: libevdev_log_priority, 
    data: *mut c_void
)