Last 8 bit of _CFG started being used in later IdeaPads, thus 30th bit
doesn't always show whether device supports touchpad or touchpad switch.
Remove checking bit 30 of _CFG, so older IdeaPads like S10-3 can switch
touchpad again via touchpad attribute.

This reverts commit b3ed1b7f ("platform/x86: ideapad-laptop: check for
touchpad support in _CFG").
Signed-off-by: Eray Orçunus <erayorcunus@gmail.com>
Acked-by: Ike Panhc <ike.pan@canonical.com>
Link: https://lore.kernel.org/r/20221029120311.11152-2-erayorcunus@gmail.comReviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>