bootctrl: Add support for boot control hal V1.2

V1_2::IBootControl adds getActiveBootSlot() API.
Enhance libboot_control_qti library to implement this API.

Change-Id: I32aea39b319f6844d82bcc17bb636add36a1f659
5 files changed
tree: bcaa2652b05b8d93afc69643d532c0d9af7504da
  1. 1.1/
  2. 1.2/
  3. Android.mk
  4. boot_control.cpp
  5. NOTICE