spice-char: notify the server when chardev is writable The spice server is polling on write, unless SPICE_CHAR_DEVICE_NOTIFY_WRITABLE flag is set. In this case, qemu must call spice_server_char_device_wakeup() when the frontend is writable. Signed-off-by: Marc-André Lureau <marcandre.lureau@gmail.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>