Changing hwcrypto interface to stable am: 4e4c3ec3e7

Original change: https://android-review.googlesource.com/c/trusty/app/sample/+/3341069

Change-Id: I17a213fcf631cd47b61d11a6cc6a12be4aeba81b
Signed-off-by: Automerger Merge Worker <[email protected]>