Qualcomm technologies, Inc. bg-rsb

BG-RSB : bg-rsb is used to communicate with Blackghost over
Glink to configure the RSB events. bg-rsb enable/disable
LDO11 and LDO15 before making any communication to BG
regarding RSB. It also provides an input device, which is
used to send the RSB/Button events to input framework.

Required properties:
- compatible : should be "qcom,bg-rsb"
- vdd-ldo1-supply : for powering main supply
- vdd-ldo2-supply : for powering sensor

Example:
	qcom,bg-rsb {
		compatible = "qcom,bg-rsb";
		vdd-ldo1-supply = <&pm660_l11>;
		vdd-ldo2-supply = <&pm660_l15>;
	};
