* [bsp][art-pi] add spi lcd ili9488 driver
* [bsp][art-pi] support LVGL display
* [bsp][artpi] support LVGL indev
* [bsp][artpi] debug LVGL indev with ft6236
* [bsp][artpi] swap and invert touchpad coordinate
* [bsp][artpi] redundant declarations
* [bsp][artpi] indent BSP_USING_LVGL config
* [bsp][artpi] default build debug version
* [bsp][artpi] fix BSP_USING_LVGL Kconfig