ARM: imx: imx_v6_v7_defconfig enable imx6ul support

default enable imx6ul support
Signed-off-by: Frank Li <Frank.Li@freescale.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm/configs/imx_v6_v7_defconfig

@@ -38,6 +38,7 @@ CONFIG_SOC_IMX53=y
 CONFIG_SOC_IMX6Q=y
 CONFIG_SOC_IMX6SL=y
 CONFIG_SOC_IMX6SX=y
+CONFIG_SOC_IMX6UL=y
 CONFIG_SOC_IMX7D=y
 CONFIG_SOC_LS1021A=y
 CONFIG_SOC_VF610=y