Binding for Nokia N900 batteryThe Nokia N900 battery status can be read via the TWL4030's A/D converter.Required properties:- compatible: Should contain one of the following: * "nokia,n900-battery"- io-channels: Should contain IIO channel specifiers for each element in io-channel-names.- io-channel-names: Should contain the following values: * "temp" - The ADC channel for temperature reading * "bsi" - The ADC channel for battery size identification * "vbat" - The ADC channel to measure the battery voltageExample from Nokia N900:battery: n900-battery { compatible = "nokia,n900-battery"; io-channels = <&twl4030_madc 0>, <&twl4030_madc 4>, <&twl4030_madc 12>; io-channel-names = "temp", "bsi", "vbat";};