sh: sh_eth: Change new network API

sh_eth used old network API. This patch changed new API.

Signed-off-by: Nobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com>
Signed-off-by: Ben Warren <biggerbadderben@gmail.com>
diff --git a/cpu/sh4/cpu.c b/cpu/sh4/cpu.c
index d94e139..52b6cfd 100644
--- a/cpu/sh4/cpu.c
+++ b/cpu/sh4/cpu.c
@@ -82,3 +82,11 @@
 {
 	return 0;
 }
+
+int cpu_eth_init(bd_t *bis)
+{
+#ifdef CONFIG_SH_ETHER
+	sh_eth_initialize(bis);
+#endif
+	return 0;
+}