mxs: Add NAND fdt and ramdisk partition to m28evk

Adjust the NAND partitioning layout so that there is a separate partition
for the ramdisk and fdt blob on the NAND.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Detlev Zundel <dzu@denx.de>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Wolfgang Denk <wd@denx.de>

include/configs/m28evk.h

@@ -178,6 +178,8 @@
 		"512k(environment),"		\
 		"512k(redundant-environment),"	\
 		"4m(kernel),"			\
+		"128k(fdt),"			\
+		"8m(ramdisk),"			\
 		"-(filesystem)"
 #else
 #define	CONFIG_ENV_IS_NOWHERE