ARM: virt: Select ARM_GIC_V3_ITS

This patch allows ARM guests to use GICv3 ITS on an arm64 host

Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index b5d529f..caef684 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -703,6 +703,7 @@
 	select ARM_GIC
 	select ARM_GIC_V2M if PCI
 	select ARM_GIC_V3
+	select ARM_GIC_V3_ITS if PCI
 	select ARM_PSCI
 	select HAVE_ARM_ARCH_TIMER