Comment 0 for bug 1368444

Please include the following commit from mainline in Ubuntu kernel:

From 5715fc764f7753d464dbe094b5ef9cffa6e479a4 Mon Sep 17 00:00:00 2001
From: Dmitry Torokhov <email address hidden>
Date: Sat, 30 Aug 2014 13:51:06 -0700
Subject: Input: synaptics - add support for ForcePads

ForcePads are found on HP EliteBook 1040 laptops. They lack any kind of
physical buttons, instead they generate primary button click when user
presses somewhat hard on the surface of the touchpad. Unfortunately they
also report primary button click whenever there are 2 or more contacts
on the pad, messing up all multi-finger gestures (2-finger scrolling,
multi-finger tapping, etc). To cope with this behavior we introduce a
delay (currently 50 msecs) in reporting primary press in case more
contacts appear.

Cc: <email address hidden>
Reviewed-by: Hans de Goede <email address hidden>
Signed-off-by: Dmitry Torokhov <email address hidden>