This patch uses the recently added MacAddress class in WakeupEvent and
WakeupStats for replacing the byte array representation of dest mac
addresses in packet wakeup events.
Bug: 28806131
Test: runtest frameworks-net
Merged-In: I5a3c76498a4b720f0d9308a65b5dd4b32377d0d1
(partial cherry pick from 884970e0ba)
Change-Id: I878d51d4cc53c6d9a2cc3c55faa15b86156afbd7