list: Add TODO to improve list_move_item() function

Signed-off-by: Otavio Pontes <otavio.pontes@intel.com>

src/lib/list.c

@@ -432,6 +432,8 @@ void *list_remove(void *item_to_remove, struct list **list, comparison_fn_t comp
 void list_move_item(void *item_to_move, struct list **list1, struct list **list2, comparison_fn_t comparison_fn)
 {
 	void *item;
+	//TODO: Improve eficience of this function. We are calling list_head()
+	//      on list1 for all iterations on while()
 
 	item = list_remove(item_to_move, list1, comparison_fn);
 	while (item) {