Merge "Check the signature on the EEK Chain." into sc-dev am: 6e061db49f am: 11eb926653 am: f138644b99

Original change: https://googleplex-android-review.googlesource.com/c/platform/system/keymaster/+/14961176

Change-Id: Id00c453e74a40fd1e9c217072527214bcfb326ea