configs: Add sam9x60ek_nandflash_defconfig

Boot from nand flash.

Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
diff --git a/board/atmel/sam9x60ek/MAINTAINERS b/board/atmel/sam9x60ek/MAINTAINERS
index e8c1346..ec5bed7 100644
--- a/board/atmel/sam9x60ek/MAINTAINERS
+++ b/board/atmel/sam9x60ek/MAINTAINERS
@@ -5,3 +5,4 @@
 F:	board/atmel/sam9x60ek/
 F:	include/configs/sam9x60ek.h
 F:	configs/sam9x60ek_mmc_defconfig
+F:	configs/sam9x60ek_nandflash_defconfig