according to the bit numbers in the GPIO control registers. The second cell
is for flags which is currently unsused.
+8) FEC nodes
+The FEC node can specify one of the following properties to configure
+the MII link:
+"fsl,7-wire-mode" - An empty property that specifies the link uses 7-wire
+ mode instead of MII
+"current-speed" - Specifies that the MII should be configured for a fixed
+ speed. This property should contain two cells. The
+ first cell specifies the speed in Mbps and the second
+ should be '0' for half duplex and '1' for full duplex
+"phy-handle" - Contains a phandle to an Ethernet PHY.
+
IV - Extra Notes
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