amcc-common.h: Disable CONFIG_SYS_LONGHELP

There are a number of AMCC platforms which are close to, or with some
toolchains exceeding, the size constraints.  Disable CONFIG_SYS_LONGHELP
to get us room to build with again.

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/include/configs/amcc-common.h b/include/configs/amcc-common.h
index 78d8044..60d6be7 100644
--- a/include/configs/amcc-common.h
+++ b/include/configs/amcc-common.h
@@ -69,7 +69,6 @@
  * Miscellaneous configurable options
  */
 #define CONFIG_BOOTDELAY	5	/* autoboot after 5 seconds	*/
-#define CONFIG_SYS_LONGHELP			/* undef to save memory		*/
 #if defined(CONFIG_CMD_KGDB)
 #define CONFIG_SYS_CBSIZE		1024	/* Console I/O Buffer Size	*/
 #else