Revert "ACPI: processor: Split out thermal initialization from ACPI PSS"

Revert commit 7fdc74da ("ACPI: processor: Split out thermal
initialization from ACPI PS"), because it causes the kernel to crash
when the cppc_cpufreq driver is rmmod'ed from a running machine that has
both CPPC and a thermal zone.

Reported-by: Jeremy Linton <jeremy.linton@arm.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>