[FEATURE] Update Graphic Configs: LVGL Kconfig

### Is your feature request related to a problem? Please describe.

Currently, NuttX uses its own Kconfig to expose LVGL's graphical configuration options. I suggest replacing it with LVGL's native Kconfig menu (via rsource/source), importing it directly from the LVGL repository. This would avoid duplicated/redundant configuration options between the two Kconfig files.

### Describe the solution you'd like

Given this non-trivial change, I suggest updating all LVGL-related symbols and replacing the current KConfig menu with the LVGL menu.

### Describe alternatives you've considered

_No response_

### Verification

- [x] I have verified before submitting the report.

Start by comparing NuttX's current LVGL Kconfig menu with LVGL's native Kconfig in the LVGL repository, then trace all existing LVGL-related symbols. Done means the native menu is imported through rsource/source, redundant options are removed, and all LVGL-related symbols are updated consistently.

Written by the indexing model from the issue text.