ARM: imx: vining2000: Enable DM Serial

Enable DM Serial support on iMX6SX VINING|2000.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Fabio Estevam <fabio.estevam@nxp.com>
Cc: Silvio Fricke <silvio.fricke@softing.com>
Cc: Stefano Babic <sbabic@denx.de>
diff --git a/configs/vining_2000_defconfig b/configs/vining_2000_defconfig
index 0a2b042..9e8326e 100644
--- a/configs/vining_2000_defconfig
+++ b/configs/vining_2000_defconfig
@@ -49,6 +49,9 @@
 CONFIG_DM_PCI=y
 CONFIG_PINCTRL=y
 CONFIG_PINCTRL_IMX6=y
+CONFIG_SPECIFY_CONSOLE_INDEX=y
+CONFIG_DM_SERIAL=y
+CONFIG_MXC_UART=y
 CONFIG_USB=y
 CONFIG_DM_USB=y
 CONFIG_USB_STORAGE=y