highbank: set AUTOBOOT_KEYED_CTRLC config option

Let highbank users break into the autoboot script with ctrl-c.

Signed-off-by: Mark Langsdorf <mark.langsdorf@calxeda.com>

include/configs/highbank.h

@@ -82,7 +82,7 @@
 #define CONFIG_RESET_TO_RETRY
 #define CONFIG_AUTOBOOT_KEYED
 #define CONFIG_AUTOBOOT_PROMPT "Autobooting in %d seconds...\nPress <s> to stop or <d> to delay\n", bootdelay
-
+#define CONFIG_AUTOBOOT_KEYED_CTRLC
 /*
  * Miscellaneous configurable options
  */