net: stmmac: Cocci spatch "of_table"

Make sure (of/i2c/platform)_device_id tables are NULL terminated.
Found by coccinelle spatch "misc/of_table.cocci"
Signed-off-by: Thomas Meyer <thomas@m3y3r.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c

@@ -315,6 +315,7 @@ static int stmmac_dt_phy(struct plat_stmmacenet_data *plat,
 		{ .compatible = "allwinner,sun8i-h3-emac" },
 		{ .compatible = "allwinner,sun8i-v3s-emac" },
 		{ .compatible = "allwinner,sun50i-a64-emac" },
+		{},
 	};
 
 	/* If phy-handle property is passed from DT, use it as the PHY */