Wakeup packet events: addressing a few comments

This patch addresses a few post-submit comment for
commits f562ac34a51dc and 60c9f63b66921.

Bug: 34901696
Bug: 62179647
Test: runtest frameworks-net
Merged-In: I4abec57e0c6bc869dc57b5eb54582dd977b64c30

(cherry picked from commit 175b574e)

Change-Id: Ied9d0cec98685e5a91ed2ca2c81ad88d7ae8d751