armv8/ls2085ardb: Enable NAND SPL support

Enable NAND boot support using SPL framework. To boot from
NAND, either use DIP switches on board, or "qixis_reset nand"
command. Details of forming NAND image can be found in README.

Signed-off-by: Scott Wood <scottwood@freescale.com>
[York Sun: Remove +S from defconfig after commit 252ed872]
Signed-off-by: York Sun <yorksun@freescale.com>
diff --git a/board/freescale/ls2085ardb/MAINTAINERS b/board/freescale/ls2085ardb/MAINTAINERS
index 436039f..d5cce40 100644
--- a/board/freescale/ls2085ardb/MAINTAINERS
+++ b/board/freescale/ls2085ardb/MAINTAINERS
@@ -5,3 +5,4 @@
 F:	board/freescale/ls2085a/ls2085ardb.c
 F:	include/configs/ls2085ardb.h
 F:	configs/ls2085ardb_defconfig
+F:	configs/ls2085ardb_nand_defconfig