Input: synaptics - add min/max quirk for the ThinkPad W540

commit 0b5fe736fe923f1f5e05413878d5990e92ffbdf5 upstream.

https://bugzilla.redhat.com/show_bug.cgi?id=1096436



Tested-and-reported-by:  <ajayr@bigfoot.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>