[Buildroot] Adding Device Tree Overlays for MIPI-CSI2 Camera and libcamera to a buildroot Build

[buildroot@cairnwater.com]

Hi,

Does anyone have any advice on how to add DTOs needed by libcamera to a 
buildroot build?

We'd like to add Kieran's DTOs

https://git.uk.ideasonboard.com/camera/dt-overlays/src/branch/main/arch/arm64/boot/dts/freescale

to the buildroot default configuration for Debix Model A SBC

https://github.com/buildroot/buildroot/blob/master/configs/polyhex_debix_model_a_defconfig

Ideally we'd also like to add the overlays for the Sony IMX 708 Image 
Sensor used in the RPi V3 camera but these aren't mainline:

https://github.com/raspberrypi/linux/blob/rpi-6.12.y/arch/arm/boot/dts/overlays/imx708-overlay.dts
https://github.com/raspberrypi/linux/blob/rpi-6.12.y/arch/arm/boot/dts/overlays/imx708.dtsi

We're planning to use the Debix Model A SBC or Debix SoM A with SoM A 
I/O board to prototype a new open source wildlife camera for our work in 
conservation of tree dwelling endangered dormice

https://new-homes-for-old-friends.cairnwater.com/

then after field studies with the prototype design a custom board for an 
NXP i.MX 8M Plus SoM.

The analysis for the new open source wildlife camera is here:

https://github.com/William-Robert-Robertson/WildCamera

Will
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