mode is to examine the relative position of the trip points.
The user can do this without the kernel doing it
for them by looking in /proc/acpi/thermal_zone/*/trip_points

New contents for /proc/acpi/thermal_zone/*/cooling_mode:

If _SCP available:
"0 - Active; 1 - Passive\n"

If _SCP unavailable:
"<setting not supported>\n"

Signed-off-by: Len Brown <len.brown@intel.com>
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