fix(security): workaround for CVE-2022-23960 for A76AE, A78AE, A78C

Implements the loop workaround for Cortex-A76AE, Cortex-A78AE and
Cortex-A78C.

Signed-off-by: Bipin Ravi <bipin.ravi@arm.com>
Signed-off-by: Madhukar Pappireddy <madhukar.pappireddy@arm.com>
Change-Id: I5c838f5b9d595ed3c461a7452bd465bd54acc548
6 files changed