input: sensors: optimize ltr553 sensor power consumption

Correct the logic to fix issues that may prevent CPU from suspend.
Also disable light sensor after system suspended to avoid waking up
system by light sensor interrupts.

Change-Id: I9a6e7e746fc6925593d8d63da5a1ed7395121edf
Signed-off-by: Oliver Wang <mengmeng@codeaurora.org>