QPNP-REVID

QPNP-REVID provides a way to read the PMIC part number and revision.

Required properties:
- compatible : should be "qcom,qpnp-revid"
- reg : offset and length of the PMIC peripheral register map.

Optional property:
- qcom,fab-id-valid: Use this property when support to read Fab
	identification from REV ID peripheral is available.
- qcom,tp-rev-valid: Use this property when support to read TP
	revision identification from REV ID peripheral.

Example:
	qcom,revid@100 {
		compatible = "qcom,qpnp-revid";
		reg = <0x100 0x100>;
	};