src/socket: Adding unix domain socket support

Added some function for adding the unix domain socket support.

Signed-off-by: Alvaro Neira Ayuso <anayuso@sysmocom.de>
diff --git a/include/osmocom/core/socket.h b/include/osmocom/core/socket.h
index f15a03a..cb1b7a8 100644
--- a/include/osmocom/core/socket.h
+++ b/include/osmocom/core/socket.h
@@ -30,6 +30,12 @@
 
 int osmo_sockaddr_is_local(struct sockaddr *addr, unsigned int addrlen);
 
+int osmo_sock_unix_init(uint16_t type, uint8_t proto,
+			const char *socket_path, unsigned int flags);
+
+int osmo_sock_unix_init_ofd(struct osmo_fd *ofd, uint16_t type, uint8_t proto,
+			    const char *socket_path, unsigned int flags);
+
 /*! @} */
 
 #endif /* _OSMOCORE_SOCKET_H */