Notify Wake Lock Queue's EventFlag after write

Signal to the Wake Lock Queue's EventFlag that data has been written
to the queue. This allows for a reader of the queue to block until
data is available.

Bug: 122528664
Test: Verified Sensors HAL 2.0 default implementation properly reads
      the Wake Lock FMQ

Change-Id: I60f76e91c5b91d97156ad0328c10beb1111ba7b5
2 files changed