NEWS: document input-raw bugfix for devices without pressure
NEWS: document input-raw bugfix for devices without pressure

We had previously silently relied on the dejitter or a similar filter
to filter out wrong zeros.

Signed-off-by: Martin Kepplinger <07ddf30bcca2a0d3056e54ffbfe155352a6af244@posteo.de>

kergoth/tslib,kergoth/tslib,kergoth/tslib,kergoth/tslib