Some GPL2 code is already in the repository, so this should be
taken into account in the COPYRIGHT file, too.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <1493812229-21037-3-git-send-email-thuth@redhat.com>
Acked-by: Andrew Jones <drjones@redhat.com>
Reviewed-by: Laurent Vivier <lvivier@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>