doc: input: add a list of general purpose drivers

        };

    };

Driver Documentation

********************

General Purpose Drivers

***********************

- :dtcompatible:`adc-keys`: for buttons connected to a resistor ladder.

- :dtcompatible:`analog-axis`: for absolute position devices connected to an

  ADC input (thumbsticks, sliders...).

- :dtcompatible:`gpio-kbd-matrix`: for GPIO-connected keyboard matrices.

- :dtcompatible:`gpio-keys`: for switches directly connected to a GPIO,

  implements button debouncing.

- :dtcompatible:`gpio-qdec`: for GPIO-connected quadrature encoders.

- :dtcompatible:`input-keymap`: maps row/col/touch events from a keyboard

  matrix to key events.

- :dtcompatible:`zephyr,input-longpress`: listens for key events, emits events

  for short and long press.

- :dtcompatible:`zephyr,lvgl-button-input`

  :dtcompatible:`zephyr,lvgl-encoder-input`

  :dtcompatible:`zephyr,lvgl-keypad-input`

  :dtcompatible:`zephyr,lvgl-pointer-input`: listens for input events and

  translates those to various types of LVGL input devices.

Detailed Driver Documentation

*****************************

.. toctree::

   :maxdepth: 1