Binding for sgm41542 battery charger

Required properties:
- compatible: "sgm,sgm41542" for sgm41542 Charger Power Supply
- monitored-battery: phandle of battery characteristics devicetree node
- input-voltage-limit-microvolt: integer, input voltage level in uV, used to
				 decrease voltage level when the over current
				 of the input power source occurs.
- input-current-limit-microamp: integer, input current value in uA drained by the
				charger from the power source.Default: 500000 uA (500mA)

child nodes:
- vbus5v0_typec:
  Usage: optional
  Description: Regulator that is used to control the VBUS voltage direction for
               either USB host mode or for charging on the OTG port.

Example:

sgm41542: sgm41542@3b {
                compatible = "sgm,sgm41542";
                reg = <0x3b>;
                input-voltage-limit-microvolt = <4500000>;
                input-current-limit-microamp = <3000000>;
                monitored-battery = <&bat>;
                regulators {
                        vbus5v0_typec: vbus5v0-typec {
                                regulator-compatible = "otg-vbus";
                                regulator-name = "vbus5v0_typec";
                        };
                };
        };