add gpio led uart

hc

2024-05-10 748e4f3d702def1a4bff191e0cf93b6a05340f01

 kernel/Documentation/devicetree/bindings/mfd/max14577.txt
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@@ -5,6 +5,8 @@
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 interfaced to host controller using I2C.
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 MAX77836 additionally contains PMIC (with two LDO regulators) and Fuel Gauge.
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+For the description of Fuel Gauge low SOC alert interrupt see:
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+../power/supply/max17040_battery.txt
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 Required properties: