irqchip/irq-imx-gpcv2: Constify irq_domain_ops

struct irq_domain_ops is not modified, so it can be made const.
Signed-off-by: NTobias Klauser <tklauser@distanz.ch>
Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com>

drivers/irqchip/irq-imx-gpcv2.c

@@ -200,7 +200,7 @@ static int imx_gpcv2_domain_alloc(struct irq_domain *domain,
 					    &parent_fwspec);
 }
 
-static struct irq_domain_ops gpcv2_irqchip_data_domain_ops = {
+static const struct irq_domain_ops gpcv2_irqchip_data_domain_ops = {
 	.translate	= imx_gpcv2_domain_translate,
 	.alloc		= imx_gpcv2_domain_alloc,
 	.free		= irq_domain_free_irqs_common,