phy: add support for ET1011C phys

Adds an ET1011C PHY driver which is derived from the
Linux kernel PHY driver (drivers/net/phy/et1011c.c)
from the v3.9-rc2 tag. Note that an errata workaround
config option is implemented to allow for TX_CLK to be
enabled even when gigabit mode is negotiated. This
workaround is used on the PG1.0 TI814X EVM.

Signed-off-by: Matt Porter <mporter@ti.com>
Reviewed-by: Tom Rini <trini@ti.com>

drivers/net/phy/phy.c

@@ -430,6 +430,9 @@ int phy_init(void)
 #ifdef CONFIG_PHY_DAVICOM
 	phy_davicom_init();
 #endif
+#ifdef CONFIG_PHY_ET1011C
+	phy_et1011c_init();
+#endif
 #ifdef CONFIG_PHY_LXT
 	phy_lxt_init();
 #endif