input: sensor: clean up some debugging log

The driver outputs too much logs and affect debugging other issues.
Some more clean up is done in the patch to supress the checkpatch
failures and keep the code style consistency.

Change-Id: I8ad9eeb2e100ab3a6999c895c4e264e689d0702c
Signed-off-by: Oliver Wang <mengmeng@codeaurora.org>