socket-util: rename parse_socket_address_bind_ipv6_only_or_bool() to socket_address_bind_ipv6_only_or_bool_from_string()

Hence, we can define config_parse_socket_bind() by using
DEFINE_CONFIG_PARSE_ENUM() macro.

src/basic/socket-util.c

@@ -790,7 +790,7 @@ static const char* const socket_address_bind_ipv6_only_table[_SOCKET_ADDRESS_BIN
 
 DEFINE_STRING_TABLE_LOOKUP(socket_address_bind_ipv6_only, SocketAddressBindIPv6Only);
 
-SocketAddressBindIPv6Only parse_socket_address_bind_ipv6_only_or_bool(const char *n) {
+SocketAddressBindIPv6Only socket_address_bind_ipv6_only_or_bool_from_string(const char *n) {
         int r;
 
         r = parse_boolean(n);