Merge "Add function to get active boot slot" am: 054c52c30a am: 518eb4a2ad am: fed02fe9c8 Original change: https://android-review.googlesource.com/c/platform/hardware/qcom/bootctrl/+/1514839 MUST ONLY BE SUBMITTED BY AUTOMERGER Change-Id: Ideecb39176d0f41b3f5c26f28e9d42043e363a11