reset initial focus state to vehicle hal's state

- vehicle hal does not necesssarily start with focus loss.
- In init, read the initial state and set it.
- This does not hold focus as focus is immediately released
  after init.
- TODO: hold the initially granted focus to prevent
  unwanted audio from being played.

bug: 26697747

Change-Id: Ia514c161d2aa1e22afe37aaca36f531ab70c861c
2 files changed