Clean up error logging audio device type collection.

There are some usages of very verbose logging audio device type
collection as unsigned int, which is missed in previous refactoring CLs
since they are not shown up without enabling very verbose log.

Bug: 148110286
Test: make with enabling very verbose log in AF and AP
Change-Id: If31b7e3dd7b094e011cb88dcb4a5d0c3e8d81bd4