Refactor Power Management

- Remove Boot Reason property
- Add extra states to AP_POWER_STATE_REPORT

Bug: 112548962
Test: vhal_emulator.py

Change-Id: I96662820a02141256c53546db662d1e05e1925ae
(cherry picked from commit b863f86ff7fad325c66c9a47a3a3e18a602adab3)
4 files changed