K 10
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V 4
wulf
K 8
svn:date
V 27
2019-01-18T22:20:29.085832Z
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V 454
psm(4): detect Lenovo top-button clickpads

libinput has special handling for Lenovo ThinkPad *40 series, where it
treats clicks on the top button area as if they came from the TrackPoint:
https://wayland.freedesktop.org/libinput/doc/latest/t440-support.html

Detect these devices and set the corresponding evdev property.

Submitted by:		Greg V <greg@unrelenting.technology>
MFC after:		2 weeks
Differential Revision:	https://reviews.freebsd.org/D18676

END