powerpc/pci: Quieten unset I/O resource warning

Newer POWER designs do not implement PCI I/O space, so we
expect to see a number of these.

Reduce the severity of the warning so it doesn't mask other
real issues.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c
index e5dad9a..bc2dab5 100644
--- a/arch/powerpc/kernel/pci-common.c
+++ b/arch/powerpc/kernel/pci-common.c
@@ -1464,7 +1464,7 @@
 	res = &hose->io_resource;
 
 	if (!res->flags) {
-		printk(KERN_WARNING "PCI: I/O resource not set for host"
+		pr_info("PCI: I/O resource not set for host"
 		       " bridge %s (domain %d)\n",
 		       hose->dn->full_name, hose->global_number);
 	} else {