abis_nm: Improve and fix OML logging

This code is among the oldest surviving parts of old bsc_hack/OpenBSC,
and it shows.  We used arcane constructs to puzzle together log
messages, attempting to switch the log level between a LOGP and LOPGC
[which doesn't work], not properly used log levels in general, ...

Let's fix this up by using the new abis_nm_dump_foh() function
introduced in libosmocore I9b2c2afec28882b817d104d5b062651ade7aadd8

Change-Id: Ibd757836c39edd2d1ce59e528342f8923a9e75e4
1 file changed