filter: add scroll movement type to the custom acceleration profile
Adds a dedicated scroll movement type to the custom acceleration profile.
Supported by physical mouse and touchpad.
Other profiles remain the same by using the same unaccelerated filter for the scroll filter.
This allows setting different custom acceleration functions for motion, scroll and zoom movements in touchpad.
See also xf86-input-libinput MR: Add support for the scroll movement type of the custom acceleration profile
Edited by Yinon Burgansky