Separate out PHY initialization.

[Frostie314159]

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Pull Request Details 📖

Description

This PR aims to provide a unified way of initializing the PHY. So far, only radio clock handling has been overhauled.

Testing

[Frostie314159]

So far, I have only partially implemented shared radio clock control. I haven't updated esp-wifi yet, since I wasn't sure if this design is ok for everyone, so feedback is welcome.

[bugadani]

Besides a couple of stylistic nitpicks I'll not list, I think the direction here is all right, although I don't see how upcoming work may change things around this.

[Frostie314159]

Ok! Glad to hear that. The reason I made the PHY status static is, because next I want to implement splitting the control over the radio clocks for the individual modems, and the PHY still needs to be controlled centrally.