Elantech SMBus support regression

[Kai Heng Feng]

Hi Benjamin,

It appears the Elantech SMBus support breaks some users’ touchpad.

Please have a look at [1] [2], thanks!

[1] https://bugs.launchpad.net/bugs/1803600
[2] https://bugs.archlinux.org/task/59714

Kai-Heng