Input: atmel_mxt_ts - recalibrate on system
 resume

In the suspend path, if we don't allow device wakeup, we put the
chip into deepsleep mode and the chip stops scanning during suspen.
On resume if the environment changes, the calibrated baseline before
suspend will no longer be valid.

In this patch we force a recalibration on resume if device wakeup is
disabled during suspend to handle the environment change.
Signed-off-by: David Rodero <david@codiguiel.net>