net: phy: add MoCA PHY type

Some Ethernet MACs are connected to a MoCA PHY which will handle the
low-level job of sending Ethernet frames on the coaxial cable, these
Ethernet MACs need to know about it to be properly configured.
Add a new PHY mode "moca" and update the Device Tree parsing logic to
look for it.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/linux/phy.h b/include/linux/phy.h
index 42f1bc7..f7fe546 100644
--- a/include/linux/phy.h
+++ b/include/linux/phy.h
@@ -74,6 +74,7 @@
 	PHY_INTERFACE_MODE_RTBI,
 	PHY_INTERFACE_MODE_SMII,
 	PHY_INTERFACE_MODE_XGMII,
+	PHY_INTERFACE_MODE_MOCA,
 	PHY_INTERFACE_MODE_MAX,
 } phy_interface_t;
 
@@ -113,6 +114,8 @@
 		return "smii";
 	case PHY_INTERFACE_MODE_XGMII:
 		return "xgmii";
+	case PHY_INTERFACE_MODE_MOCA:
+		return "moca";
 	default:
 		return "unknown";
 	}