mx28evk: 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/mx28evk.h

@@ -238,7 +238,7 @@
  */
 #define CONFIG_CMDLINE_TAG
 #define CONFIG_SETUP_MEMORY_TAGS
-#define CONFIG_BOOTDELAY	3
+#define CONFIG_BOOTDELAY	1
 #define CONFIG_BOOTFILE	"uImage"
 #define CONFIG_LOADADDR	0x42000000
 #define CONFIG_SYS_LOAD_ADDR	CONFIG_LOADADDR