[POWERPC] Remove local_number from pci_controller

We never actually read local_number so lets just remove it.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

arch/powerpc/platforms/iseries/pci.c

@@ -768,7 +768,7 @@ void __init iSeries_pcibios_init(void)
 		if (phb == NULL)
 			continue;
 
-		phb->pci_mem_offset = phb->local_number = bus;
+		phb->pci_mem_offset = bus;
 		phb->first_busno = bus;
 		phb->last_busno = bus;
 		phb->ops = &iSeries_pci_ops;