ARM: Port Heads to Lenovo Chromebook Duet Gen9 (ciri)

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There is no port of Heads for the ciri platform

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A port of Heads for the ciri platform

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In addition to being secure, Heads may be easier to port than any other potential payloads. Depthcharge is a pain to use generic Linux with, UEFIPayload on coreboot for ARM doesn't exist, and u-boot drivers for MT8188 aren't upstreamed.

Linux (6.14) has initial support for this platform, making Linuxboot (and specifically Heads) a good payload candidate to make Ciri usable as a normal Linux laptop.

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Start by reviewing the existing Heads porting approach and the platform details for the Lenovo Chromebook Duet Gen9 (ciri). Check Linux 6.14's initial ciri support and the stated Depthcharge, UEFIPayload, and u-boot constraints. Done means Heads boots on ciri and makes it usable as a normal Linux laptop.

Written by the indexing model from the issue text.