power_WakeupRTC: fails with 'RTC alarm should increase RTC wakeup_count: rtc0'

Looks like this is a regression, ~R69-10784.0.0

See stainless for details,

https://stainless.corp.google.com/search?view=matrix&row=model&col=build&first_date=2018-03-25&last_date=2018-06-21&test=%5Epower_WakeupRTC%24&build=.*1078%5B0-9%5D.0.0&status=GOOD&status=FAIL&status=ERROR&status=ABORT&exclude_cts=true&exclude_not_run=false&exclude_non_release=true&exclude_au=true&exclude_acts=true&exclude_retried=true&exclude_non_production=false

Looks to affect large portion of devices in reef, rambi & veyron families.

Here's changelist,

https://crosland.corp.google.com/log/10783.0.0..10788.0.0

but I don't see anything that immediately jumps out at me.

Ravi can you have a look at failure on reef devices?  Hopefully there all related.