Integrate meta-seconorth-distro/add_fngsystem_image_type

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Commit: seco-ne/yocto/layers/meta-seconorth-distro@0a7baeb0

images:fngsystem: Remove ramfs from FNG_BOOT and add dependency for WiC

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Commit: seco-ne/yocto/layers/meta-seconorth-distro@08549a9f

wic:fngsystem: Increase log level and add new messages

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Commit: seco-ne/yocto/layers/meta-seconorth-distro@d2126d36

classes:fngsystem: Check dtb/dtbo before copy operation

For MTK, we have generic overlays, that are applicable to multiple
processors (e.g. Genio 700 and Genio 510).
In these cases, the overlay names do not contain the machine names.
Check the full paths before copying and do a fallback to the original
artifact name, if the path does not exist.

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Commit: seco-ne/yocto/layers/meta-seconorth-distro@7ea40fe4

images:fng: Remove extra WiC image for Flash-N-Go

The WiC image is now created as part of the Flash-N-Go standard image.
Remove the extra image target.

Note: The WiC image artefacts are now taken directly from
IMAGE_BOOT_FILES.

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Commit: seco-ne/yocto/layers/meta-seconorth-distro@80cd6ed6

images:fng: Remove custom do_deploy function

The function blocks the creation of WiC images for Flash-N-Go System. It
was moved to the custom image type fngsystem.

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Commit: seco-ne/yocto/layers/meta-seconorth-distro@051a2ea6

classes:images: Add new image type for fngsystem