Merge "Polish the comments of Cluster VHAL." into sc-dev am: 0a9323ca

Original change: https://googleplex-android-review.googlesource.com/c/platform/hardware/interfaces/+/13764878

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: Ie8b31e348d85073a3f3f97941c9a8c30063a3eb6