Merge changes from topics "hm/errata-refactor", "jc/errata_refactor" into integration
* changes:
refactor(cpus): convert the Cortex-x2 to use cpu helpers
refactor(cpus): convert the Cortex-x2 to use the errata framework
refactor(cpus): reorder Cortex-x2 errata by ascending order
refactor(cpus): convert the Cortex-A65AE to use the errata framework
refactor(cpus): convert the Cortex-A510 to use cpu helpers
refactor(cpus): convert the Cortex-A510 to use the errata framework
refactor(cpus): reorder Cortex-A510 errata by ascending order
chore(fvp): add Aarch32 Cortex-A53 to the build
refactor(cpus): add Cortex-A53 errata framework information
feat(cpus): add errata framework helpers
chore(brcm): include cpu_helpers.S for bl2 build