irqchip/imx-mu-msi: Convert to msi_create_parent_irq_domain() helper

Now that we have a concise helper to create an MSI parent domain,
switch the IMX letter soup over to that.

Signed-off-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Nam Cao <tglx@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Link: https://lore.kernel.org/all/4f05fff99b6cc5875d2f4dadd31707e2dedaafc8.1750860131.git.namcao@linutronix.de
Link: https://lore.kernel.org/all/20241204124549.607054-7-maz@kernel.org

Author: Marc Zyngier

drivers/irqchip/irq-imx-mu-msi.c

@@ -223,21 +223,21 @@ static const struct msi_parent_ops imx_mu_msi_parent_ops = {
 
 static int imx_mu_msi_domains_init(struct imx_mu_msi *msi_data, struct device *dev)
 {
-	struct fwnode_handle *fwnodes = dev_fwnode(dev);
+	struct irq_domain_info info = {
+		.ops		= &imx_mu_msi_domain_ops,
+		.fwnode		= dev_fwnode(dev),
+		.size		= IMX_MU_CHANS,
+		.host_data	= msi_data,
+	};
 	struct irq_domain *parent;
 
 	/* Initialize MSI domain parent */
-	parent = irq_domain_create_linear(fwnodes, IMX_MU_CHANS,
-					  &imx_mu_msi_domain_ops, msi_data);
+	parent = msi_create_parent_irq_domain(&info, &imx_mu_msi_parent_ops);
 	if (!parent) {
 		dev_err(dev, "failed to create IRQ domain\n");
 		return -ENOMEM;
 	}
-
-	irq_domain_update_bus_token(parent, DOMAIN_BUS_NEXUS);
 	parent->dev = parent->pm_dev = dev;
-	parent->flags |= IRQ_DOMAIN_FLAG_MSI_PARENT;
-	parent->msi_parent_ops = &imx_mu_msi_parent_ops;
 	return 0;
 }