mace: Fix build for mace due to netdev_alloc_skb

Refs:
1. pmac32_defconfig
http://kisskb.ellerman.id.au/kisskb/buildresult/5583746/
2. ppc6xx_defconfig
http://kisskb.ellerman.id.au/kisskb/buildresult/5584116/

Confirmed any such occurances from all failed defconfigs &
in net-next sources with
grep -nrs "netdev_alloc_skb" drivers/net/ethernet/ | grep -v ","

Reported-by: Geert Uytterhoeven <[e-mail]>
Signed-off-by: Pradeep A Dalvi <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

drivers/net/ethernet/apple/mace.c

···
 	cp = mp->rx_cmds + i;
 	skb = mp->rx_bufs[i];
 	if (!skb) {
-	    skb = netdev_alloc_skb(RX_BUFLEN + 2);
+	    skb = netdev_alloc_skb(dev, RX_BUFLEN + 2);
 	    if (skb) {
 		skb_reserve(skb, 2);
 		mp->rx_bufs[i] = skb;