kvm tools: powerpc: Fix init order for xics

xics_init() assumes kvm->nrcpus is already setup. kvm->nrcpus is setup in kvm_cpu_init()

Unfortunately xics_init() and kvm_cpu_init() both use base_init(). So depending on the order randomly determined by the compiler, xics_init() may initialised see kvm->nrcpus as 0 and not setup any of the icp VCPU pointers. This manifests itself later in boot when trying to raise an IRQ resulting in a null pointer deference/segv.

This moves xics_init() to use dev_base_init() to ensure it happens after kvm_cpu_init().

index cf64a08..c1ef35b 100644
@@ -505,7 +505,7 @@ static int xics_init(struct kvm *kvm)
 
 	return 0;
 }
-base_init(xics_init);
+dev_base_init(xics_init);
 
 
 void kvm__irq_line(struct kvm *kvm, int irq, int level)

Applied, thanks a lot!