Merge "Clean up keymint ProtectedData documentation" into tm-dev am: 1e8fc75bc0 am: 80d9783761

Original change: https://googleplex-android-review.googlesource.com/c/platform/hardware/interfaces/+/18078117

Change-Id: I2d9788365368979be7be3a9a770cc51fcf171cf1
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>