Fix some more printf() format issues.

Signed-off-by: Wolfgang Denk <wd@denx.de>
diff --git a/net/eth.c b/net/eth.c
index 7fc9aee..38979aa 100644
--- a/net/eth.c
+++ b/net/eth.c
@@ -627,7 +627,7 @@
 #if defined(CONFIG_MCF52x2)
 	mcf52x2_miiphy_initialize(bis);
 #endif
-#if defined(CONFIG_NETARM)
+#if defined(CONFIG_DRIVER_NS7520_ETHERNET)
 	ns7520_miiphy_initialize(bis);
 #endif
 #if defined(CONFIG_DRIVER_TI_EMAC)