mx31pdk: Configure CONFIG_BOOTDELAY to one second

One second is enough time for users to react in case they want to stop the
booting process.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>

include/configs/mx31pdk.h

@@ -106,7 +106,7 @@
 
 #define CONFIG_BOARD_LATE_INIT
 
-#define CONFIG_BOOTDELAY	3
+#define CONFIG_BOOTDELAY	1
 
 #define	CONFIG_EXTRA_ENV_SETTINGS					\
 	"bootargs_base=setenv bootargs console=ttymxc0,115200\0"	\