of/address: replace printk(KERN_ERR ...) with pr_err(...)

A trivial change suggested by checkpatch.pl.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Rob Herring <robh@kernel.org>
diff --git a/drivers/of/address.c b/drivers/of/address.c
index cd53fe4..5289c80 100644
--- a/drivers/of/address.c
+++ b/drivers/of/address.c
@@ -596,7 +596,7 @@
 		pbus = of_match_bus(parent);
 		pbus->count_cells(dev, &pna, &pns);
 		if (!OF_CHECK_COUNTS(pna, pns)) {
-			printk(KERN_ERR "prom_parse: Bad cell count for %s\n",
+			pr_err("prom_parse: Bad cell count for %s\n",
 			       of_node_full_name(dev));
 			break;
 		}