[POWERPC] Merge ppc32 and ppc64 pcibios_alloc_controller() prototypes

Make the ppc32 pcibios_alloc_controller take a device node to match
the ppc64 prototypes and have it set arch_data.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
diff --git a/arch/powerpc/sysdev/tsi108_pci.c b/arch/powerpc/sysdev/tsi108_pci.c
index 298e2dd..90db8a7 100644
--- a/arch/powerpc/sysdev/tsi108_pci.c
+++ b/arch/powerpc/sysdev/tsi108_pci.c
@@ -221,13 +221,12 @@
 		       " bus 0\n", dev->full_name);
 	}
 
-	hose = pcibios_alloc_controller();
+	hose = pcibios_alloc_controller(dev);
 
 	if (!hose) {
 		printk("PCI Host bridge init failed\n");
 		return -ENOMEM;
 	}
-	hose->arch_data = dev;
 
 	hose->first_busno = bus_range ? bus_range[0] : 0;
 	hose->last_busno = bus_range ? bus_range[1] : 0xff;