mx53loco: Change default environment to cope with OE changes

OpenEmbedded has change partitioning layout of generated image so it
does not raise warnings during the boot regarding unkown partition
being used for U-Boot.

Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
Acked-by: Jason Liu <r64343@freescale.com>

include/configs/mx53loco.h

@@ -124,8 +124,8 @@
 	"boot_fdt=try\0" \
 	"ip_dyn=yes\0" \
 	"mmcdev=0\0" \
-	"mmcpart=2\0" \
-	"mmcroot=/dev/mmcblk0p3 rw rootwait\0" \
+	"mmcpart=1\0" \
+	"mmcroot=/dev/mmcblk0p2 rw rootwait\0" \
 	"mmcargs=setenv bootargs console=ttymxc0,${baudrate} root=${mmcroot}\0" \
 	"loadbootscript=" \
 		"fatload mmc ${mmcdev}:${mmcpart} ${loadaddr} ${script};\0" \