input: touchscreen: focaltech: release i2c session early

Release I2C session lock before releasing IO regions in TVM
during trusted touch scenario.

Change-Id: If943165b687318eac6c5f7b734bc6dea4c0efa46
Signed-off-by: Shashank Babu Chinta Venkata <sbchin@codeaurora.org>
Signed-off-by: Ritesh Kumar <riteshk@codeaurora.org>