net: ethernet: sun: initialize variables directly

Clean up the code a bit to initialize the variables directly when
defining them.
Signed-off-by: Emilio López <emilio@elopez.com.ar>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/sun/sunbmac.c

@@ -1017,10 +1017,7 @@ static void bigmac_set_multicast(struct net_device *dev)
 		tmp |= BIGMAC_RXCFG_PMISC;
 		sbus_writel(tmp, bregs + BMAC_RXCFG);
 	} else {
-		u16 hash_table[4];
-
-		for (i = 0; i < 4; i++)
-			hash_table[i] = 0;
+		u16 hash_table[4] = { 0 };
 
 		netdev_for_each_mc_addr(ha, dev) {
 			crc = ether_crc_le(6, ha->addr);