mx6slevk: Fix the power up of the Ethernet PHY

GPIO4_21 is the LAN8720 power pin, not the LAN8720 reset pin.

Fix that, so that we can have Ethernet functional again.

Reviewed-by: Tom Rini <trini@konsulko.com>
Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>

board/freescale/mx6slevk/mx6slevk.c

@@ -57,7 +57,7 @@ DECLARE_GLOBAL_DATA_PTR;
 			PAD_CTL_DSE_80ohm | PAD_CTL_HYS |	\
 			PAD_CTL_SRE_FAST)
 
-#define ETH_PHY_RESET	IMX_GPIO_NR(4, 21)
+#define ETH_PHY_POWER	IMX_GPIO_NR(4, 21)
 
 int dram_init(void)
 {
@@ -154,10 +154,9 @@ static void setup_iomux_fec(void)
 {
 	imx_iomux_v3_setup_multiple_pads(fec_pads, ARRAY_SIZE(fec_pads));
 
-	/* Reset LAN8720 PHY */
-	gpio_direction_output(ETH_PHY_RESET , 0);
-	udelay(25000);
-	gpio_set_value(ETH_PHY_RESET, 1);
+	/* Power up LAN8720 PHY */
+	gpio_direction_output(ETH_PHY_POWER , 1);
+	udelay(15000);
 }
 
 #define USDHC1_CD_GPIO	IMX_GPIO_NR(4, 7)