tree e982f524320130cc219f213e309e0755aeeccceb
parent ef5d6e67da1776b6dd878968d5e0222f189642cf
author Pooja Singh <spooja@codeaurora.org> 1583230993 +0530
committer Pooja Singh <spooja@codeaurora.org> 1592382022 +0530

Extended exsisting servicetracker HAL for callbacks

With it's newer version, client will be able to register for callbacks.
Support has been added for notifying registered clients for change
in activity state.

Change-Id: I47ee97062ad4c4e7be363d6ea279608e6d8c4219