ARM: dts: msm: add flag to bypass touch sensor coords check

Some unprogrammed touch panels from touch vendor and wrongly
programmed touch panels from factory may return incorrect
touch sensor coordinate range when their query registers are
read via I2C transaction, but these panels work fine in the
field otherwise and their data registers give correct coordinates.
These panels give incorrect coordinates range because either
they are not programmed with a firmware file or there was an
error in programming the firmware. In such a scenario,
touch driver should not compare the coordinate ranges retreived
from touch sensor and DT node and allow the driver operation
to continue normally. Inorder to resolve the above issue of
the touch controller add flag in touchscreen device node to
make sensor coordinate checking optional.

Change-Id: I3b04412a3b1eab0439a9b29794dfcf9165dd30c5
Signed-off-by: Sarada Prasanna Garnayak <c_sgarna@codeaurora.org>