rent 28f49616113f3a1fbef789319bfd2122d0c3663f
author JJ Ding <jj_ding@emc.com.tw> 1315589518 -0700
committer Dmitry Torokhov <dmitry.torokhov@gmail.com> 1315589702 -0700

Input: elantech - add v4 hardware support

v4 hardware is a true multitouch capable touchpad (up to 5 fingers).
The packet format is quite complex, please see protocol document for
reference.

Signed-off-by: JJ Ding <jj_ding@emc.com.tw>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
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