Juno: Disable 859971 and 859972 errata workarounds

Earlier patches added errata workarounds 859972 for Cortex-A72, and
859972 for Cortex-A57 CPUs. Explicitly disable the workaround for Juno.

Also reorganize errata workaround flags.

No functional changes.

Change-Id: I3fe3745de57d77e5bf52012826d3969fe5d4844e
Signed-off-by: Eleanor Bonnici <Eleanor.bonnici@arm.com>
Signed-off-by: Jeenu Viswambharan <jeenu.viswambharan@arm.com>
1 file changed