[U-Boot] i2c: rework multibus/multiadapter functionality

[Wolfgang Denk]

Dear Heiko Schocher,

In message <49C89574.9040302 at denx.de> you wrote:
> 
> I want now, because the merge window is open again, restart the
> the multibus/multiadapter discussion.

No negative feedback has been posted, as far as I can tell.

Will you post patches for this merge window?

Best regards,

Wolfgang Denk

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