(feat) Add basic mimxrt support.

[andrewleech]

I'm working on getting LVGL working cleanly on the NXP 1170 EVK with a LVGL v9 compatible driver in progress here: https://github.com/andrewleech/imxrt1170_display_driver

These minimal changes to the LVGL bindings files enables the build environment to enable port specific features more easily.

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Summary by cubic

Add basic NXP i.MX RT (mimxrt) support with PXP acceleration and port-aware build rules. LVGL v9 now runs on the RT1170 EVK with PXP.

• New Features
  • Detect the active port in micropython.mk; add a mimxrt block that sets LV_USE_PXP, LV_USE_DRAW_PXP, LV_USE_GPU_NXP_PXP, and LV_USE_GPU_NXP_PXP_AUTO_INIT via CFLAGS_USERMOD, and silences specific PXP driver warnings for a clean -Werror build.
  • Guard LV_DRAW_BUF_ALIGN, LV_USE_PXP, LV_USE_DRAW_PXP, and LV_USE_ROTATE_PXP with #ifndef in lv_conf.h so boards can override via build flags without redefinition warnings.
  • Add a submodules rule to initialize lvgl and pycparser from the port build with make submodules.

^{Written for commit 9a2fffa. Summary will update on new commits.}

[cubic-dev-ai]

All reported issues were addressed across 2 files

Prompt for AI agents (all 1 issues)

Understand the root cause of the following 1 issues and fix them.


<file name="lv_conf.h">

<violation number="1" location="lv_conf.h:255">
`LV_USE_PXP` is still the controlling flag for this block, but the new guard defines `LV_USE_DRAW_PXP` instead, leaving `LV_USE_PXP` undefined so the feature can never be enabled.</violation>
</file>

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