gpio: xgene-sb: Use irq_domain_free_irqs_common()

Current code calls irq_domain_alloc_irqs_parent() in .alloc,
so it should call irq_domain_free_irqs_parent() accordingly in .free.
Fix it by switching to use irq_domain_free_irqs_common() instead.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/gpio/gpio-xgene-sb.c

@@ -216,23 +216,10 @@ static int xgene_gpio_sb_domain_alloc(struct irq_domain *domain,
 			&parent_fwspec);
 }
 
-static void xgene_gpio_sb_domain_free(struct irq_domain *domain,
-		unsigned int virq,
-		unsigned int nr_irqs)
-{
-	struct irq_data *d;
-	unsigned int i;
-
-	for (i = 0; i < nr_irqs; i++) {
-		d = irq_domain_get_irq_data(domain, virq + i);
-		irq_domain_reset_irq_data(d);
-	}
-}
-
 static const struct irq_domain_ops xgene_gpio_sb_domain_ops = {
 	.translate      = xgene_gpio_sb_domain_translate,
 	.alloc          = xgene_gpio_sb_domain_alloc,
-	.free           = xgene_gpio_sb_domain_free,
+	.free           = irq_domain_free_irqs_common,
 	.activate	= xgene_gpio_sb_domain_activate,
 	.deactivate	= xgene_gpio_sb_domain_deactivate,
 };