Use driver_data instead of user_data (BSP-600)

[KenVanHoeylandt]

Change description

esp_lvgl_port was using user data to store data. When I started wrapping the drivers in my project and using the user data, this broke esp_lvgl_port.
Since LVGL9, there's a "driver data" attribute, so I refactored the existing drivers to use the driver data functions instead, which frees up the user data, which can then be left to the user.

[CLAassistant]

All committers have signed the CLA.

[KenVanHoeylandt]

I had to revert some parts: This was new code from master which wasn't present in the version of esp_lvgl_port that I was using in my project. They were not part of my original changeset, so I improvised right before opening this PR.

I've reverted the relevant bits and tested it in my project (using this branch). It compiles and LVGL works.
I used a Lilygo T-Deck Plus with ESP-IDF 5.3 and LVGL 9.0 + LVGL master branch.

[tore-espressif]

Thank you for the fix!

[espzav]

@KenVanHoeylandt Thank you for this update. LGTM