This patch adds a module parameter to report either the raw
coordinate data or the hardware-calibrated coordinate data for
MicroTouch/3M touchscreens.  The default is set to the raw
coordinates for backwards compatibilty.
Signed-off-by: NDan Streetman <ddstreet@ieee.org>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>