phylib: add PHY interface modes for internal delay for tx and rx only

Allow phylib specification of cases where hardware needs to configure
PHYs for Internal Delay only on either RX or TX (not both).
Signed-off-by: NKim Phillips <kim.phillips@freescale.com>
Tested-by: NAnton Vorontsov <avorontsov@ru.mvista.com>
Acked-by: NLi Yang <leoli@freescale.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

include/linux/phy.h

@@ -58,6 +58,8 @@ typedef enum {
 	PHY_INTERFACE_MODE_RMII,
 	PHY_INTERFACE_MODE_RGMII,
 	PHY_INTERFACE_MODE_RGMII_ID,
+	PHY_INTERFACE_MODE_RGMII_RXID,
+	PHY_INTERFACE_MODE_RGMII_TXID,
 	PHY_INTERFACE_MODE_RTBI
 } phy_interface_t;