Valentin Schneider authored Sep 30, 2020 and Ionela Voinescu committed Aug 02, 2021

The previous commit removed per-CPU thermal zones. Despite having a thermal
sensor per-CPU, the trip points in those zones would affect *several* CPUs:
this system doesn't have per-CPU DVFS, so one cannot change the frequency
of an individual CPU, but rather a group thereof (i.e. the frequency
domain).

Furthermore, the (existing) CPU cluster thermal zones have a "hot" trip
point set at the same trip temperature as the lower per-CPU thermal
zones. AIUI this is actually useless, as the struct thermal_zone_device_ops
provided by thermal_of.c doesn't contain a .notify() callback, so no action
will (and can) be taken as a consequence of hitting that trip point.

Copy the previous per-CPU trip points / cooling maps into the CPU cluster
thermal zones. This should effectively lead to a similar CPU thermal
management as before with less overhead.

Signed-off-by: Valentin Schneider <valentin.schneider@arm.com>