Unisoc power-debug bindings

This node is used to define control information and address space node used the
power debug driver, which output the power and interrupt state will help us to
analyze the SoC system power exception.

Required properties:
- compatible: Should be "sprd,debuglog"

optional properties:
 - sprd,pdbg-irq-domain-gic: irq domain name for gic
 - sprd,pdbg-irq-domain-gpio: irq domain name for gpio
 - sprd,pdbg-irq-domain-ana: irq domain name for ana
 - sprd,pdbg-irq-domain-ana-eic: irq domain name for ana eic
 - sprd,pdbg-irq-domain-ap-eic-dbnc: irq domain name for ap dbnc eic
 - sprd,pdbg-irq-domain-ap-eic-latch: irq domain name for ap latch eic
 - sprd,pdbg-irq-domain-ap-eic-async: irq domain name for ap async eic
 - sprd,pdbg-irq-domain-ap-eic-sync: irq domain name for ap sync eic

Example:
	debug_log: debuglog {
		compatible                         = "sprd,debuglog";
		sprd,pdbg-irq-domain-gic           = "GICv3";
		sprd,pdbg-irq-domain-gpio          = "sprd-gpio-plus";
		sprd,pdbg-irq-domain-ana           = "spi4.0";
		sprd,pdbg-irq-domain-ana-eic       = "41800000.spi:pmic@0:gpio-controller@280";
		sprd,pdbg-irq-domain-ap-eic-async  = "402100a0.gpio";
	};
