Power connect/disconnet notification: add missing intent broadcast for ACTION_POWER_CONNECTED

fix the sound/vibration when plugged in
reference change: https://github.com/rascarlo/android_frameworks_base/commit/e9a5c9576bfa9dde3dab9660787f6202c7bedc07
Merge remote-tracking branch 'rascarlo/kk-ras-mr1.2' into kk-ras-mr1.2