net/macb: configure for FIFO mode and non-gigabit

This addition will also allow to configure DMA burst length.

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 files changed