TWL BCI (Battery Charger Interface)

Required properties:
- compatible:
  - "mediatek,psp_fsm"
- reg: The base address ptp register bank
- interrupts: Should contain PTP interrupt.

Examples:

ptp_fsm@1100b000 {
	compatible = "mediatek,psp_fsm";
	reg = <0x1100B000 0x1000>;
	interrupts = <GIC_SPI 125 IRQ_TYPE_LEVEL_LOW>;
};