debug: use LOGL_NOTICE for log category DDEV
debug: use LOGL_NOTICE for log category DDEV

The log category DDEV ueses LOGL_INFO as debug level. This is too
verbose, lets use LOGL_NOTICE instead

Change-Id: I56d45ce5c3f55574491ffa6e4d902d6ba7499d46
Related: OS#2577

osmocom/osmo-trx,osmocom/osmo-trx,osmocom/osmo-trx,osmocom/osmo-trx