LTC4151 High Voltage I2C Current and Voltage Monitor

Required properties:
- compatible: Must be "lltc,ltc4151"
- reg: I2C address

Optional properties:
- shunt-resistor-micro-ohms
	Shunt resistor value in micro-Ohms
	Defaults to <1000> if unset.

Example:

ltc4151@6e {
	compatible = "lltc,ltc4151";
	reg = <0x6e>;
	shunt-resistor-micro-ohms = <1500>;
};