Merge "CEC : Add validators for timer status message" am: 45b2b2b22a am: 699b381205 am: 5f737d06fc

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1483957

Change-Id: I78fbe162660a3c9c95a43b4cb4c40b5d55f204e7