powerpc: Fix warning when printing a resource_size_t

resource_size_t is 64 bits on PowerPC 64.

Gets rid of this warning:

arch/powerpc/kernel/pci_64.c: In function 'pcibios_map_io_space':
arch/powerpc/kernel/pci_64.c:504: warning: format '%016lx' expects type 'long unsigned int', but argument 2 has type 'resource_size_t'
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

arch/powerpc/kernel/pci_64.c

@@ -506,7 +506,7 @@ int __devinit pcibios_map_io_space(struct pci_bus *bus)
 	pr_debug("IO mapping for PHB %s\n", hose->dn->full_name);
 	pr_debug("  phys=0x%016llx, virt=0x%p (alloc=0x%p)\n",
 		 hose->io_base_phys, hose->io_base_virt, hose->io_base_alloc);
-	pr_debug("  size=0x%016lx (alloc=0x%016lx)\n",
+	pr_debug("  size=0x%016llx (alloc=0x%016lx)\n",
 		 hose->pci_io_size, size_page);
 
 	/* Establish the mapping */