am d6da4d4f: am 47cca063: Merge changes Idcb48155,Iecb8c3db,I4924134b into ics-mr0

* commit 'd6da4d4fa58b40f66a4bb5b7b0d15bfe7ab7d8c9':
  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