migration_protocol: add migration data for char devices
migration_protocol: add migration data for char devices

Fantu/spice,fgouget/spice,fgouget/spice,Fantu/spice,freedesktop-unofficial-mirror/spice__spice,alon/spice-server,mathslinux/spice,SPICE/spice,fgouget/spice,elmarco/spice,SPICE/spice,alon/spice-server,elmarco/spice,freedesktop-unofficial-mirror/spice__spice,ya-mouse/spice,ya-mouse/spice,mathslinux/spice,alon/spice-server,elmarco/spice,fgouget/spice,freedesktop-unofficial-mirror/spice__spice,mathslinux/spice,Fantu/spice,alon/spice-server,elmarco/spice,mathslinux/spice,freedesktop-unofficial-mirror/spice__spice,Fantu/spice,ya-mouse/spice,alon/spice-server,elmarco/spice,SPICE/spice,freedesktop-unofficial-mirror/spice__spice,mathslinux/spice