network: Make address_hash_ops available outside of networkd-address.c

In order to allow other parts of systemd-networkd to use sets/hashmaps
of Address objects, the address_hash_ops structure needs to be made
available to them.

Author: kpfleming

src/network/networkd-address.c

@@ -187,7 +187,7 @@ static int address_compare_func(const Address *a1, const Address *a2) {
         }
 }
 
-DEFINE_PRIVATE_HASH_OPS(address_hash_ops, Address, address_hash_func, address_compare_func);
+DEFINE_HASH_OPS(address_hash_ops, Address, address_hash_func, address_compare_func);
 
 bool address_equal(Address *a1, Address *a2) {
         if (a1 == a2)

src/network/networkd-address.h

@@ -67,6 +67,8 @@ int configure_ipv4_duplicate_address_detection(Link *link, Address *address);
 
 DEFINE_NETWORK_SECTION_FUNCTIONS(Address, address_free);
 
+extern const struct hash_ops address_hash_ops;
+
 CONFIG_PARSER_PROTOTYPE(config_parse_address);
 CONFIG_PARSER_PROTOTYPE(config_parse_broadcast);
 CONFIG_PARSER_PROTOTYPE(config_parse_label);