Merge changes from topic "SendStandbyOnSleepSharedPrefs"

* changes:
  [CEC Configuration] Switch POWER_CONTROL_MODE to Shared Preferences
  [CEC Configuration] Switch TV_WAKE_ON_ONE_TOUCH_PLAY to SharedPrefs
  [CEC Configuration] Switch HDMI_SYSTEM_AUDIO_CONTROL_ENABLED to SharefPrefs
  [CEC Configuration] Switch VOLUME_CONTROL_MODE to Shared Preferences
  [CEC Configuration] Switch ROUTING_CONTROL setting to SharedPrefs