1SMSC LAN91c111 Ethernet mac
2
3Required properties:
4- compatible = "smsc,lan91c111";
5- reg : physical address and size of registers
6- interrupts : interrupt connection
7
8Optional properties:
9- phy-device : see ethernet.txt file in the same directory
10- reg-io-width : Mask of sizes (in bytes) of the IO accesses that
11  are supported on the device.  Valid value for SMSC LAN91c111 are
12  1, 2 or 4.  If it's omitted or invalid, the size would be 2 meaning
13  16-bit access only.
14- power-gpios: GPIO to control the PWRDWN pin
15- reset-gpios: GPIO to control the RESET pin
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