input: misc: qcom-power-on: Add support to log KPDPWR status

Add support to log KPDPWR status during driver INIT and runtime
when "qcom,log-kpd-event" is enabled.

Change-Id: I6eb58e560552741ea5f48967b56bb2236b375830
Signed-off-by: Ashish Chavan <ashichav@codeaurora.org>