Add support for new ContextHub and HAL APIs

Starts storing client attribution tags and using the new HAL 1.2
methods from the HAL. The attribution tags and HAL 1.2 methods will be
used for permissions enforcement in a follow up change.

Bug: 166846988
Test: Flash device and verify nanoapps can be communicated with on a 1.2
HAL

Change-Id: I0c0523d8462c1c03084aa52b128e79a326b1ff66