net: phy: Support "internal" PHY interface

Now that the Device Tree binding has been updated, update the PHY
library phy_interface_t and phy_modes to support the "internal" PHY
interface type.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

include/linux/phy.h

@@ -64,6 +64,7 @@
 /* Interface Mode definitions */
 typedef enum {
 	PHY_INTERFACE_MODE_NA,
+	PHY_INTERFACE_MODE_INTERNAL,
 	PHY_INTERFACE_MODE_MII,
 	PHY_INTERFACE_MODE_GMII,
 	PHY_INTERFACE_MODE_SGMII,
@@ -114,6 +115,8 @@ static inline const char *phy_modes(phy_interface_t interface)
 	switch (interface) {
 	case PHY_INTERFACE_MODE_NA:
 		return "";
+	case PHY_INTERFACE_MODE_INTERNAL:
+		return "internal";
 	case PHY_INTERFACE_MODE_MII:
 		return "mii";
 	case PHY_INTERFACE_MODE_GMII: