genirq/msi: Provide DOMAIN_BUS_WIRED_TO_MSI

Provide a domain bus token for the upcoming support for wire to MSI device
domains so the domain can be distinguished from regular device MSI domains.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Anup Patel <apatel@ventanamicro.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20240127161753.114685-10-apatel@ventanamicro.com

include/linux/irqdomain_defs.h

@@ -27,6 +27,7 @@ enum irq_domain_bus_token {
 	DOMAIN_BUS_AMDVI,
 	DOMAIN_BUS_PCI_DEVICE_IMS,
 	DOMAIN_BUS_DEVICE_MSI,
+	DOMAIN_BUS_WIRED_TO_MSI,
 };
 
 #endif /* _LINUX_IRQDOMAIN_DEFS_H */