irqchip/renesas-irqc: Move PM device over to irq domain

Move the reference to the device over to the irq domain.
Signed-off-by: Marc Zyngier <maz@kernel.org>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Bartosz Golaszewski <brgl@bgdev.pl>
Link: https://lore.kernel.org/r/20220201120310.878267-5-maz@kernel.org

drivers/irqchip/irq-renesas-irqc.c

@@ -188,13 +188,14 @@ static int irqc_probe(struct platform_device *pdev)
 	p->gc->reg_base = p->cpu_int_base;
 	p->gc->chip_types[0].regs.enable = IRQC_EN_SET;
 	p->gc->chip_types[0].regs.disable = IRQC_EN_STS;
-	p->gc->chip_types[0].chip.parent_device = dev;
 	p->gc->chip_types[0].chip.irq_mask = irq_gc_mask_disable_reg;
 	p->gc->chip_types[0].chip.irq_unmask = irq_gc_unmask_enable_reg;
 	p->gc->chip_types[0].chip.irq_set_type	= irqc_irq_set_type;
 	p->gc->chip_types[0].chip.irq_set_wake	= irqc_irq_set_wake;
 	p->gc->chip_types[0].chip.flags	= IRQCHIP_MASK_ON_SUSPEND;
 
+	irq_domain_set_pm_device(p->irq_domain, dev);
+
 	/* request interrupts one by one */
 	for (k = 0; k < p->number_of_irqs; k++) {
 		if (devm_request_irq(dev, p->irq[k].requested_irq,