imx6: isiotmx6ul: Add NAND support

Add NAND support for Engicam Is.IoT MX6UL board.

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>
diff --git a/board/engicam/isiotmx6ul/MAINTAINERS b/board/engicam/isiotmx6ul/MAINTAINERS
index 558e516..f4dcfbd 100644
--- a/board/engicam/isiotmx6ul/MAINTAINERS
+++ b/board/engicam/isiotmx6ul/MAINTAINERS
@@ -4,5 +4,7 @@
 F:	board/engicam/isiotmx6ul
 F:	include/configs/imx6ul_isiot.h
 F:	configs/imx6ul_isiot_mmc_defconfig
+F:	configs/imx6ul_isiot_nand_defconfig
 F:	arch/arm/dts/imx6ul-isiot.dtsi
 F:	arch/arm/dts/imx6ul-isiot-mmc.dts
+F:	arch/arm/dts/imx6ul-isiot-nand.dts