drivers: dac: add max22017 support

[granquet]

This series add support for the MAX22017 DAC.

The MAX22017 is a two-channel industrial-grade software-configurable analog output device that can be used in either voltage or current output mode.

The DAC also has support for six configurable GPIO.

[github-actions]

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[martinjaeger]

Thanks @granquet for your PR and sorry for the late response. It got lost in my notifications for some reason.

As far as I can see, the DAC, ADC and GPIO features of this device are independent of each other. Can you please split out the GPIO driver from this PR and create a dedicated PR for it? This will help with reviews, as the GPIO and DAC drivers are maintained by different persons.

I will do a thorough review once the GPIO sections are taken out.

[MaureenHelm]

Need to add a node with this compatible to tests/drivers/build_all/dac/app.overlay

[mmahadevan108]

@granquet , we are only merging bug fixes and documentation updates for the 4.0 release. I am changing the milestone to 4.1

[kartben]

@granquet this would need to be rebased on main as it has merge conflicts

[granquet]

@granquet this would need to be rebased on main as it has merge conflicts

Thx for notifying me :)

[kartben]

@granquet this would need to be rebased on main as it has merge conflicts

Thx for notifying me :)

Np :) you also have "interesting" commits in this PR that look like they don't want to be there :)

[github-actions]

Hi @granquet!
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