Add a void *user_data pointer to the input callback structure. This is
useful for driver to get back the driver data structure and avoid
defining wrapper functions.
Signed-off-by: Fabio Baltieri <fabiobaltieri@google.com>
By making short inputs optional, the user can bypass short-events all
together if necessary (e.g. custom button-press listener).
Signed-off-by: Juliane Schulze <juliane.schulze@deveritec.com>
