menuconfig: Add jump keys to search results

makes it possible to jump directly to the menu for a configuration entry after
having searched for it with '/'. If this menu is not currently accessible we
jump to the nearest accessible parent instead. After exiting this menu, the
user is returned to the search results where he may jump further in or
elsewhere.

Signed-off-by: Benjamin Poirier <bpoirier@suse.de>
Signed-off-by: Michal Marek <mmarek@suse.cz>
diff --git a/scripts/kconfig/expr.h b/scripts/kconfig/expr.h
index d4ecce8..52f4246 100644
--- a/scripts/kconfig/expr.h
+++ b/scripts/kconfig/expr.h
@@ -173,6 +173,8 @@
 #define MENU_CHANGED		0x0001
 #define MENU_ROOT		0x0002
 
+#define JUMP_NB			9
+
 extern struct file *file_list;
 extern struct file *current_file;
 struct file *lookup_file(const char *name);