qcacmn: Abstract qdf_mem_validate_list_node()

Currently qdf_mem contains a function, qdf_mem_validate_list_node(), for
validating a list node and ensuring it is currently part of a list.
Instead, abstract this function from qdf_mem, and move the definition to
qdf_list_node_in_any_list() in qdf_list. This is a more reasonable
location for the list-specific logic, and allows its reuse by other
callers.

Change-Id: I56a5d54e3c81470a111f168533faedf7fa525ff3
CRs-Fixed: 2359358

qdf/inc/qdf_list.h

@@ -161,4 +161,25 @@ QDF_STATUS qdf_list_remove_node(qdf_list_t *list,
 
 bool qdf_list_empty(qdf_list_t *list);
 
+/**
+ * qdf_list_has_node() - check if a node is in a list
+ * @list: pointer to the list being searched
+ * @node: pointer to the node to search for
+ *
+ * This API has a time complexity of O(n).
+ *
+ * Return: true if the node is in the list
+ */
+bool qdf_list_has_node(qdf_list_t *list, qdf_list_node_t *node);
+
+/**
+ * qdf_list_node_in_any_list() - ensure @node is a member of a list
+ * @node: list node to check
+ *
+ * This API has a time complexity of O(1). See also qdf_list_has_node().
+ *
+ * Return: true, if @node appears to be in a list
+ */
+bool qdf_list_node_in_any_list(const qdf_list_node_t *node);
+
 #endif /* __QDF_LIST_H */