Merge wakeup_source changes into msm-4.19

* refs/heads/tmp-5da1114:
  Restore "UPSTREAM: PM / wakeup updates"

Change-Id: Ic256d059a99f075b519c4441c8b12fe4da818d62
Signed-off-by: Ivaylo Georgiev <irgeorgiev@codeaurora.org>