Merge "Zygote: Add Arm pointer authentication keychange support." am: 285dfb3126 am: 9b63f4e904 am: 54cb1fcefb am: 6844bdf237 am: 9fcc15c63f

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1215821

Change-Id: I1b2bc517c93809a673c4fc197e7118d3f470c9dd