pxa: colibri_pxa270: disable loadb/s commands and long help

To save more than 20 KB of precious space in NOR flash get rid of the
following configuration options:

CONFIG_CMD_LOADB
CONFIG_CMD_LOADS
CONFIG_SYS_LONGHELP

Signed-off-by: Marcel Ziswiler <marcel@ziswiler.com>

include/configs/colibri_pxa270.h

@@ -52,6 +52,8 @@
  */
 #include <config_cmd_default.h>
 
+#undef CONFIG_CMD_LOADB			/* Both together */
+#undef CONFIG_CMD_LOADS			/* saves 10 KB */
 #define	CONFIG_CMD_NET
 #define	CONFIG_CMD_ENV
 #undef	CONFIG_CMD_IMLS
@@ -84,7 +86,7 @@
  */
 #define	CONFIG_SYS_HUSH_PARSER		1
 
-#define	CONFIG_SYS_LONGHELP
+#undef	CONFIG_SYS_LONGHELP		/* Saves 10 KB */
 #ifdef	CONFIG_SYS_HUSH_PARSER
 #define	CONFIG_SYS_PROMPT		"$ "
 #else