util: TristateBool and TristateSwitch are interchangeable
util: TristateBool and TristateSwitch are interchangeable

It may be useful in some cases to call TristateSwitch helper with TristateBool.
Document that enum values equivalency in the code.

Signed-off-by: Marc-André Lureau <a6f2b960a4aca61381fc650a67901b2ac8e83e6d@redhat.com>

datto/libvirt,fabianfreyer/libvirt,nertpinx/libvirt,VenkatDatta/libvirt,andreabolognani/libvirt,VenkatDatta/libvirt,datto/libvirt,nertpinx/libvirt,taget/libvirt,libvirt/libvirt,fabianfreyer/libvirt,eskultety/libvirt,olafhering/libvirt,eskultety/libvirt,nertpinx/libvirt,libvirt/libvirt,datto/libvirt,fabianfreyer/libvirt,jardasgit/libvirt,eskultety/libvirt,zippy2/libvirt,VenkatDatta/libvirt,fabianfreyer/libvirt,VenkatDatta/libvirt,jfehlig/libvirt,libvirt/libvirt,nertpinx/libvirt,datto/libvirt,zippy2/libvirt,olafhering/libvirt,crobinso/libvirt,andreabolognani/libvirt,VenkatDatta/libvirt,jardasgit/libvirt,zippy2/libvirt,andreabolognani/libvirt,andreabolognani/libvirt,eskultety/libvirt,nertpinx/libvirt,datto/libvirt,jfehlig/libvirt,eskultety/libvirt,libvirt/libvirt,jfehlig/libvirt,olafhering/libvirt,olafhering/libvirt,jardasgit/libvirt,taget/libvirt,andreabolognani/libvirt,jardasgit/libvirt,crobinso/libvirt,fabianfreyer/libvirt,jfehlig/libvirt,zippy2/libvirt,crobinso/libvirt,taget/libvirt,taget/libvirt,taget/libvirt,crobinso/libvirt,jardasgit/libvirt