Fixed the Spock SCSI ID selection.
Fixed CD Audio on NCR 5380-based SCSI controllers.
Added a proprietary CD-ROM controller selection (not hooked up yet).
All on qt only.
* moved CONFIG_MIDI and CONFIG_MIDI_IN to own blocks when constructing
comboboxes in deviceconfig
* use Models::AddEntry in deviceconfig
* sub-handling of CONFIG_HEX16 and CONFIG_HEX20 in CONFIG_SELECTION
block when constructing, and use corresponding config_setter
* make sure SCSI controller- and ISAMEM-deviceconfig calls up
deviceconfig with an instance number
* midi input and midi output was mixed when constructing soundsettings
when loading prev. settings
