Support for Elantech trackpads (common on new laptops)

Hi everyone,

Raphael Poss has kindly submitted a patch to bring support for Elantech
trackpads, which are common in new laptops.

I have tidied the patch so that it applies cleanly to 11-current (as of
r301929). It is attached to PR205690.
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=205690

Could someone familiar with moused and mice drivers in sys/dev/atkbdc/psm.c
please have a look?

Thanks,
Ben

--
From: Benjamin Woods
woodsb02_at_gmail.com