Enable this option to support booting a zImage.
Signed-off-by: Simon Glass <sjg@chromium.org>
 #define CONFIG_LAST_STAGE_INIT
 #define CONFIG_X86_NO_RESET_VECTOR
 #define CONFIG_SYS_VSNPRINTF
+#define CONFIG_ZBOOT_32
 
 /*-----------------------------------------------------------------------
  * Watchdog Configuration
 #define CONFIG_CMD_FAT
 #define CONFIG_CMD_EXT2
 
+#define CONFIG_CMD_ZBOOT
+
 #define CONFIG_BOOTDELAY       2
 #define CONFIG_BOOTARGS                "root=/dev/mtdblock0 console=ttyS0,9600"