Merge "Initial Secretkeeper HAL service for Trusty" into main am: 88676076 am: 3c098dd5

Original change: https://android-review.googlesource.com/c/platform/system/core/+/2826453



Change-Id: I10336d590e4e6e0c845627891870896f29cdbdc5
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>