ARM: imx: vining2000: Enable DM GPIO

Enable DM GPIO support on iMX6SX VINING|2000 and fix up
board code where applicable.
Signed-off-by: NMarek Vasut <marex@denx.de>
Cc: Fabio Estevam <fabio.estevam@nxp.com>
Cc: Silvio Fricke <silvio.fricke@softing.com>
Cc: Stefano Babic <sbabic@denx.de>

board/softing/vining_2000/vining_2000.c

@@ -133,6 +133,7 @@ int board_eth_init(bd_t *bis)
 		goto eth_fail;
 
 	/* reset phy */
+	gpio_request(PHY_RESET, "PHY-reset");
 	gpio_direction_output(PHY_RESET, 0);
 	mdelay(16);
 	gpio_set_value(PHY_RESET, 1);

configs/vining_2000_defconfig

@@ -38,6 +38,7 @@ CONFIG_EFI_PARTITION=y
 CONFIG_OF_CONTROL=y
 CONFIG_DEFAULT_DEVICE_TREE="imx6sx-softing-vining-2000"
 CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG=y
+CONFIG_DM_GPIO=y
 CONFIG_DM_MMC=y
 CONFIG_SUPPORT_EMMC_RPMB=y
 CONFIG_SUPPORT_EMMC_BOOT=y