ethernet_interface: Fix variable naming

The new function names introduced by
6aef769f1d2e8015b98cb3d8d6c20a81d60f1be0 caused a naming conflict with
local variables. Update the local variable names to fix the conflict.

Change-Id: Ib916b347bcb683dd352943dccf57d806669f33f7
Signed-off-by: William A. Kennington III <wak@google.com>
1 file changed