input: atmel_maxtouch_ts: add support to ignore CRC

Cyclic Redundancy Check is performed on object configuration
during boot. Some of the atmel controllers store incorrect
CRC and causes the driver to fail. Add optional feature to
disable CRC in such cases.

Change-Id: I512318976462de4944184a05d9ca9745a545b270
Signed-off-by: Mohan Pallaka <mpallaka@codeaurora.org>