[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/platforms/86xx/pci.c b/arch/powerpc/platforms/86xx/pci.c
index 2d7254c..5cb2188 100644
--- a/arch/powerpc/platforms/86xx/pci.c
+++ b/arch/powerpc/platforms/86xx/pci.c
@@ -196,10 +196,10 @@
 		       " bus 0\n", dev->full_name);
 
 	pci_assign_all_buses = 1;
-	hose = pcibios_alloc_controller();
+	hose = pcibios_alloc_controller(dev);
 	if (!hose)
 		return -ENOMEM;
-	hose->arch_data = dev;
+
 	hose->indirect_type = PPC_INDIRECT_TYPE_EXT_REG |
 				PPC_INDIRECT_TYPE_SURPRESS_PRIMARY_BUS;