R35s battery fixes#2922
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…ounters Some RK3326 R36S/R35S clones ship an uncalibrated coulomb counter that reads ~0, so SOC sticks at 0% and never recovers. Re-seed SOC from an OCV lookup of the power-on voltage when the counter reports implausibly low, mirroring the vendor rk817_battery driver.
…ry OCV table The shared r3xs base node uses the ODROID-GO2 OCV curve, which is wrong for the R36S clone cell and makes the gauge report empty early. Override the r36s battery node with the clone curve and a lower min-design voltage.
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Summary
This PR fixes a bug on R35s devices where the battery gauge is permanently at zero.
Testing
This change was manually tested on my R35s.
AI Usage
I had a lot of help from Claude Opus to iterate on possible solutions to the problem. I pointed it at this project as it doesn't have the mentioned bug.