Merge "Defined trigger result structures for positive / negative hotword...

Merge "Defined trigger result structures for positive / negative hotword triggers." into sc-dev am: 4c460aca

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/13853268

Change-Id: I3c0eac42bfa97cc8fb3726634f3d31ceada27d68