[SANTINO] Remove Ethernet-related unused functions

Remove from the board file the Ethernet-related function inherited from
the NXP reference project.

board/seco/imx6dl_santino/imx6dl_santino.c

@@ -155,7 +155,6 @@ enum mxc_clock usdhc_clk[CONFIG_SYS_FSL_USDHC_NUM] = {
 	MXC_ESDHC4_CLK
 };
 
-
 struct usdhc_l usdhc_list_spl[CONFIG_SYS_FSL_USDHC_NUM] = {
 	{usdhc2_pads, ARRAY_SIZE(usdhc2_pads)/2, USDHC2_CD_GPIO, USDHC2_WP_GPIO},
 	{usdhc4_pads, ARRAY_SIZE(usdhc4_pads)/2, -1, IMX_GPIO_NR(7, 0)}
@@ -221,56 +220,9 @@ int board_mmc_init( struct bd_info *bis ) {
 #endif
 #endif
 
-static int ar8031_phy_fixup(struct phy_device *phydev)
-{
-	unsigned short val;
-
-	/* To enable AR8031 ouput a 125MHz clk from CLK_25M */
-	if (!is_mx6dqp()) {
-		phy_write(phydev, MDIO_DEVAD_NONE, 0xd, 0x7);
-		phy_write(phydev, MDIO_DEVAD_NONE, 0xe, 0x8016);
-		phy_write(phydev, MDIO_DEVAD_NONE, 0xd, 0x4007);
-
-		val = phy_read(phydev, MDIO_DEVAD_NONE, 0xe);
-		val &= 0xffe3;
-		val |= 0x18;
-		phy_write(phydev, MDIO_DEVAD_NONE, 0xe, val);
-	}
-
-	/* set the IO voltage to 1.8v */
-	phy_write(phydev, MDIO_DEVAD_NONE, 0x1d, 0x1f);
-	phy_write(phydev, MDIO_DEVAD_NONE, 0x1e, 0x8);
-
-	/* introduce tx clock delay */
-	phy_write(phydev, MDIO_DEVAD_NONE, 0x1d, 0x5);
-	val = phy_read(phydev, MDIO_DEVAD_NONE, 0x1e);
-	val |= 0x0100;
-	phy_write(phydev, MDIO_DEVAD_NONE, 0x1e, val);
-
-	return 0;
-}
-
-int board_phy_config(struct phy_device *phydev)
-{
-	ar8031_phy_fixup(phydev);
-
-	if (phydev->drv->config)
-		phydev->drv->config(phydev);
-
-	return 0;
-}
-
 static void setup_fec(void)
 {
-	if (is_mx6dqp()) {
-		int ret;
-
-		/* select ENET MAC0 TX clock from PLL */
-		imx_iomux_set_gpr_register(5, 9, 1, 1);
-		ret = enable_fec_anatop_clock(0, ENET_125MHZ);
-		if (ret)
-		    printf("Error fec anatop clock settings!\n");
-	}
+	/* do nothing */
 }
 
 #ifdef CONFIG_USB_EHCI_MX6