fix(cpus): workaround for Cortex-A510 erratum 2080326

Cortex-A510 erratum 2080326 is a Cat B erratum that applies
to all revisions <= r0p2 and is fixed in r0p3.
The workaround sequence helps perform a DSB after each TLBI
instruction and can be applied only for version r0p2 and has
minimal performance impact.
The workaround is not applicable for versions < r0p2.

SDEN documentation:
https://developer.arm.com/documentation/SDEN1873361/latest

Change-Id: Ib9bce8b711c25a79f7b2f891ae6f8b366fc80ddd
Signed-off-by: Sona Mathew <sonarebecca.mathew@arm.com>
4 files changed