Merge branches 'backport/ltsi-3.4.25/arch_timer-1', 'backport/ltsi-3.4.25/cpu-topology-1', 'backport/ltsi-3.4.25/louis-1' and 'backport/ltsi-3.4.25/gic-1' into backport/ltsi-3.4.25/a15-base-1