Merge Trusted Firmware-A v2.8 release am: 425f3fc006

Original change: https://android-review.googlesource.com/c/trusty/external/trusted-firmware-a/+/2628527

Change-Id: I4f1ba497032271b727c1b027d1af87d7f6014c47
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>