Merge "KeyMint HAL: clarify leaf cert requirements" am: 824c5d8f60 am: ac42d60136 am: a25bb1ce67

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/2154073

Change-Id: I840adcb60f174f8538667e4ab9e570eea2f67b67
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>