feat(NemaGFX): Add nema libs for cortex m55. E.g. STM32N6

[liamHowatt]

Untested.

The headers are different but I am leaving them unchanged because the old headers (in LVGL, for M33) appear to be forward-compatible with the M55 headers.

Notes

• Update the Documentation if needed.
• Add Examples if relevant.
• Add Tests if applicable.
• If you added new options to lv_conf_template.h run lv_conf_internal_gen.py and update Kconfig.
• Run scripts/code-format.py (astyle v3.4.12 needs to installed by running cd scripts; ./install_astyle.sh) and follow the Code Conventions.
• Mark the Pull request as Draft while you are working on the first version, and mark is as Ready when it's ready for review.
• When changes were requested, re-request review to notify the maintainers.
• Help us to review this Pull Request! Anyone can approve or request changes.

[github-actions[bot]]

Hi :wave:, thank you for your PR!

We've run benchmarks in an emulated environment. Here are the results:

ARM Emulated 32b - lv_conf_perf32b

Scene Name	Avg CPU (%)	Avg FPS	Avg Time (ms)	Render Time (ms)	Flush Time (ms)
All scenes avg.	28	37	7	7	0

Detailed Results Per Scene

Scene Name	Avg CPU (%)	Avg FPS	Avg Time (ms)	Render Time (ms)	Flush Time (ms)
Empty screen	11	33	0	0	0
Moving wallpaper	2	33	1	1	0
Single rectangle	0	50	0	0	0
Multiple rectangles	0	33	0	0	0
Multiple RGB images	0	39	0	0	0
Multiple ARGB images	9	42	2	2	0
Rotated ARGB images	56	44	15	15	0
Multiple labels	6	35	0	0	0
Screen sized text	97	47	20	20	0
Multiple arcs	33	33	7	7	0
Containers	4	37	0	0	0
Containers with overlay	87	21	44	44	0
Containers with opa	16	37	0	0	0
Containers with opa_layer	16	33	5	5	0
Containers with scrolling	44	45	12	12	0
Widgets demo	68 (-2)	40	16	16	0
All scenes avg.	28	37	7	7	0

ARM Emulated 64b - lv_conf_perf64b

Scene Name	Avg CPU (%)	Avg FPS	Avg Time (ms)	Render Time (ms)	Flush Time (ms)
All scenes avg.	25	37	6	6	0

Detailed Results Per Scene

Scene Name	Avg CPU (%)	Avg FPS	Avg Time (ms)	Render Time (ms)	Flush Time (ms)
Empty screen	11	33	0	0	0
Moving wallpaper	1	33	0	0	0
Single rectangle	0	50	0	0	0
Multiple rectangles	0	33	0	0	0
Multiple RGB images	0	39 (+1)	0	0	0
Multiple ARGB images	7	42 (+1)	0	0	0
Rotated ARGB images	31 (+1)	34 (+1)	9	9	0
Multiple labels	4 (+1)	33	0	0	0
Screen sized text	82 (-1)	46	18	18	0
Multiple arcs	40 (+1)	33	6	6	0
Containers	5 (+1)	37 (-1)	0	0	0
Containers with overlay	87 (-1)	22 (-1)	41	41	0
Containers with opa	15	37	0 (-1)	0 (-1)	0
Containers with opa_layer	8 (-2)	36 (-2)	2	2	0
Containers with scrolling	45 (-1)	47	12 (+1)	12 (+1)	0
Widgets demo	67	41	15	15	0
All scenes avg.	25	37	6	6	0

Disclaimer: These benchmarks were run in an emulated environment using QEMU with instruction counting mode. The timing values represent relative performance metrics within this specific virtualized setup and should not be interpreted as absolute real-world performance measurements. Values are deterministic and useful for comparing different LVGL features and configurations, but may not correlate directly with performance on physical hardware. The measurements are intended for comparative analysis only.

---

:robot: This comment was automatically generated by a bot.