overlays: Add MAX22007

[jansunil]

Add MAX22007 DAC overlay

PR Description

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PR Type

• Bug fix (a change that fixes an issue)
• New feature (a change that adds new functionality)
• Breaking change (a change that affects other repos or cause CIs to fail)

PR Checklist

• I have conducted a self-review of my own code changes
• I have compiled my changes, including the documentation
• I have tested the changes on the relevant hardware
• I have updated the documentation outside this repo accordingly
• I have provided links for the relevant upstream lore

[nunojsa]

Please run git log --oneline arch/arm/boot/dts/overlays and see how the commit subject should look like.

[nunojsa]

I guess 2026 now :)

[nunojsa]

I think you need this here to avoid the warnings.