phy: Add support for SMSC LAN87xx PHYs

This adds support for the SMSC LAN87xx PHYs.

Following PHYs can be used by set CONFIG_PHY_SMSC to config.
 - SMSC LAN8700
 - SMSC LAN8710/LAN8720
 - SMSC LAN8710/LAN8720

A setup of PHY was copied from linux kenrel.

Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Fixed white space errors; modified commit message a bit.
Signed-off-by: Wolfgang Denk <wd@denx.de>
diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c
index 8da7688..eb55180 100644
--- a/drivers/net/phy/phy.c
+++ b/drivers/net/phy/phy.c
@@ -444,6 +444,9 @@
 #ifdef CONFIG_PHY_REALTEK
 	phy_realtek_init();
 #endif
+#ifdef CONFIG_PHY_SMSC
+	phy_smsc_init();
+#endif
 #ifdef CONFIG_PHY_TERANETICS
 	phy_teranetics_init();
 #endif