[POWERPC] Remove local_number from pci_controller

We never actually read local_number so lets just remove it.
Signed-off-by: NKumar 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;

include/asm-powerpc/pci-bridge.h

@@ -146,7 +146,6 @@ struct pci_controller {
 	struct resource io_resource;
 	struct resource mem_resources[3];
 	int global_number;
-	int local_number;
 	unsigned long buid;
 	unsigned long dma_window_base_cur;
 	unsigned long dma_window_size;