mgcp_client: logging tweaks

Fix typos, use osmo_sock_get_name2() to show the tx source and target IP:port,
shorten some wording.

Depends: I8ad89ac447c9c582742e70d082072bdd40a5a398 (libosmocore)
Change-Id: Iae728192f499330d16836d9435648f6b8ed213b6
1 file changed