net: pxa168_eth: move SET_NETDEV_DEV a bit earlier

This is to ensure the net_device's dev.parent is set before we used it
in dma_zalloc_coherent() from init_hash_table().

Signed-off-by: Jisheng Zhang <jszhang@marvell.com>
Acked-by: Antoine Tenart <antoine.tenart@free-electrons.com>
Signed-off-by: David S. Miller <davem@davemloft.net>