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

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

Change-Id: I38da42b85c054f4ac745ae35dffdc550b2e9d648
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>