arm/gic: avoid GICv2m MMIO frame overlap

Currently we accidentally overlap the GICv2m MMIO frame with the CPU
interface region. Fix this by moving the v2m frame below the CPUI region.
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>

arm/gic.c

@@ -224,7 +224,7 @@ int gic__create(struct kvm *kvm, enum irqchip_type type)
 	switch (type) {
 	case IRQCHIP_GICV2M:
 		gic_msi_size = KVM_VGIC_V2M_SIZE;
-		gic_msi_base = ARM_GIC_DIST_BASE - gic_msi_size;
+		gic_msi_base = ARM_GIC_CPUI_BASE - gic_msi_size;
 		break;
 	case IRQCHIP_GICV2:
 		break;