commit e154ab69321ce2c54f19863d75c77b4e2dc9d365 upstream.

Lenovo s21e-20 uses ELAN0601 in its ACPI tables for the Elan touchpad.
Signed-off-by: NVincent Batts <vbatts@hashbangbash.com>
Cc: stable@vger.kernel.org
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>