net: mtk_eth_soc: remove unused mac->mode

mac->mode is only ever written to in one location, and is thus
superflous. Remove it.
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/ethernet/mediatek/mtk_eth_soc.c

@@ -2982,7 +2982,6 @@ static int mtk_add_mac(struct mtk_eth *eth, struct device_node *np)
 
 	/* mac config is not set */
 	mac->interface = PHY_INTERFACE_MODE_NA;
-	mac->mode = MLO_AN_PHY;
 	mac->speed = SPEED_UNKNOWN;
 
 	mac->phylink_config.dev = &eth->netdev[id]->dev;

drivers/net/ethernet/mediatek/mtk_eth_soc.h

@@ -999,7 +999,6 @@ struct mtk_eth {
 struct mtk_mac {
 	int				id;
 	phy_interface_t			interface;
-	unsigned int			mode;
 	int				speed;
 	struct device_node		*of_node;
 	struct phylink			*phylink;