[PATCH RESEND] sunxi: add axp313a support

[SASANO Takayoshi]

Hello, sorry for late reply!

> Anyway, my plan is to not add anything to the SPL code in its current
> shape anymore, instead do some refactoring first, then have a much cleaner
> and smaller patch with the AXP313a support. I am more than halfway through
> with that, just stuck on some nasty preprocessor problem. I will post
> something once that's ready, and will then CC: you, so you can add the
> AXP313 parts on top, if you like.

Sounds good, current complicated PMIC should be cleaned I think.
If a testing staff is needed, please tell me.

By the way, do you have any memory controller information
when Allwinner H616 connects DDR4?

Simply adding AXP313a code make MangoPi MQ-Quad working,
but OrangePi Zero3 requires setting up memory controller for DDR4.

At least sunxi's binary blob (boot0) can do this, no source code.

Best regards,
-- 
SASANO Takayoshi (JG1UAA) <uaa at mx5.nisiq.net>