irqchip/irq-msi-lib: Prepare for DOMAIN_BUS_WIRED_TO_MSI

Add the new bus token to the accepted list of child domain tokens.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Anna-Maria Behnsen <anna-maria@linutronix.de>
Signed-off-by: Shivamurthy Shastri <shivamurthy.shastri@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20240623142235.207343466@linutronix.de

Author: KAGA-KOKO

drivers/irqchip/irq-msi-lib.c

@@ -69,6 +69,8 @@ bool msi_lib_init_dev_msi_info(struct device *dev, struct irq_domain *domain,
 
 		/* Core managed MSI descriptors */
 		info->flags = MSI_FLAG_ALLOC_SIMPLE_MSI_DESCS | MSI_FLAG_FREE_MSI_DESCS;
+		fallthrough;
+	case DOMAIN_BUS_WIRED_TO_MSI:
 		/* Remove PCI specific flags */
 		required_flags &= ~MSI_FLAG_PCI_MSI_MASK_PARENT;
 		break;