Function 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,
)