imx6ul: isiotmx6ul: Enable I2C support

Enable I2C support for Engicam Is.IoT NAND module.

Cc: Stefano Babic <sbabic@denx.de>
Cc: Matteo Lisi <matteo.lisi@engicam.com>
Cc: Michael Trimarchi <michael@amarulasolutions.com>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>

configs/imx6ul_isiot_nand_defconfig

@@ -26,6 +26,7 @@ CONFIG_CMD_GPIO=y
 CONFIG_CMD_MII=y
 CONFIG_CMD_PING=y
 CONFIG_CMD_CACHE=y
+CONFIG_CMD_I2C=y
 CONFIG_CMD_EXT4=y
 CONFIG_CMD_EXT4_WRITE=y
 CONFIG_CMD_FAT=y
@@ -36,5 +37,6 @@ CONFIG_NAND_MXS=y
 CONFIG_FEC_MXC=y
 CONFIG_PINCTRL=y
 CONFIG_PINCTRL_IMX6=y
+CONFIG_SYS_I2C_MXC=y
 CONFIG_MXC_UART=y
 CONFIG_IMX_THERMAL=y