irqchip: GICv3: ITS: enable compilation of the ITS driver

Get the show on the road...
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Link: https://lkml.kernel.org/r/1416839720-18400-13-git-send-email-marc.zyngier@arm.comSigned-off-by: Jason Cooper <jason@lakedaemon.net>

arch/arm64/Kconfig

@@ -13,6 +13,7 @@ config ARM64
 	select ARM_GIC
 	select AUDIT_ARCH_COMPAT_GENERIC
 	select ARM_GIC_V3
+	select ARM_GIC_V3_ITS if PCI_MSI
 	select BUILDTIME_EXTABLE_SORT
 	select CLONE_BACKWARDS
 	select COMMON_CLK

drivers/irqchip/Kconfig

@@ -16,6 +16,10 @@ config ARM_GIC_V3
 	select MULTI_IRQ_HANDLER
 	select IRQ_DOMAIN_HIERARCHY
 
+config ARM_GIC_V3_ITS
+	bool
+	select PCI_MSI_IRQ_DOMAIN
+
 config ARM_NVIC
 	bool
 	select IRQ_DOMAIN

drivers/irqchip/Makefile

@@ -20,6 +20,7 @@ obj-$(CONFIG_ARCH_SUNXI)		+= irq-sunxi-nmi.o
 obj-$(CONFIG_ARCH_SPEAR3XX)		+= spear-shirq.o
 obj-$(CONFIG_ARM_GIC)			+= irq-gic.o irq-gic-common.o
 obj-$(CONFIG_ARM_GIC_V3)		+= irq-gic-v3.o irq-gic-common.o
+obj-$(CONFIG_ARM_GIC_V3_ITS)		+= irq-gic-v3-its.o
 obj-$(CONFIG_ARM_NVIC)			+= irq-nvic.o
 obj-$(CONFIG_ARM_VIC)			+= irq-vic.o
 obj-$(CONFIG_ATMEL_AIC_IRQ)		+= irq-atmel-aic-common.o irq-atmel-aic.o