am 47cca063: Merge changes Idcb48155,Iecb8c3db,I4924134b into ics-mr0

* commit '47cca063939a9d5a3ea0b287d64aac0f53f4c45c':
  charger: ignore key event if value didn't change
  charger: sync with the current key state on boot
  charger: print last_kmsg directly using klog_write