Allow compatibility with 'old' Touchscreens (Linux < 3.1)

BOARD_USE_LEGACY_TOUCHSCREEN := true in your BoardConfig.mk

Support the Multitouch, 10-points tested on the qtouch (Defy/Droid)

Remember to add the new idc file required for the touchscreen/keypad
Example: /system/usr/idc/qtouch-touchscreen.idc

Change-Id: I62f8b36350784ec6ba73f4a2d942f441fe710ae3
Signed-off-by: Tanguy Pruvot <tanguy.pruvot@gmail.com>
Process the BTN_MOUSE event

This is required in order to make the trackball on devices that has it to
work properly, like it does before ICS. In addition to this patch, you just
need an .idc file that matches the device name for your the trackball. You can
find it by either looking in a kernel log or a logcat.

For example, a device with a Crucial optical navigation pad, will be called
curcial-oj.idc

The .idc file should contain the following:

cursor.mode = navigation
cursor.orientationAware = 1

Place the file in /system/usr/idc folder.

Enable in BoardConfig.mk with BOARD_USE_LEGACY_TRACKPAD := true

Change-Id: I8684b94871a8bf9070dcda3538a239b111da7f5b