[SM6115] Bring up USB

[sunshineinabox]

Summary

• What is the goal of this PR?
• Enalbe USB charging
• Allow OTG to work (Controllers)
• Wires USB and VBUS boost implemented from old driver
• Uses compatible Mainline driver that is functionally equivalent
• We lose PPS, because that chip does not have a driver available

Testing

• How was this tested? Built and tested on Mangmi Air X, wiht 8bitdo controller and faster charger, negotiation works, network gadget works

Additional Context

• Add any other information that might be helpful for the reviewer
• Charging does not match android fast charging and its unfortunate. Can possibly try using Reg-linux driver, but I thought it would be more prudent to stick with mainline.
• Will require further testing

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AI Usage

While ROCKNIX doesn't have restrictions on AI tools in contributing, please be transparent about their usage as it
helps set the right context for reviewers.

Did you use AI tools to help write this code? NO

[sunshineinabox]

Fast charging is broken for now I'm working on fixing it

[sunshineinabox]

This is very conservative while charging on fast charger vendor pulls 3000mA, we don't have a software thermistor in our driver so lower limit is fine. This will require a one line patch to make sure it actually uses this value.