Error log on key downgrade am: 2dc09f37d8

Original change: https://android-review.googlesource.com/c/platform/system/keymaster/+/2063870

Change-Id: I7ec022dd6b6205ab5d2aa52601c86798c7c44c75
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>