Merge branch irq/irqchip-dt-updates into irq/irqchip-next

DT updates

* irq/irqchip-dt-updates:
  dt-bindings: interrupt-controller: arm,gic-v3: Describe GICv3 optional properties
  dt-bindings: irqchip: renesas-irqc: Add R-Car M3-W+ support