platform/x86: thinkpad_acpi: Add support for dual fan control

   This adds dual fan control for P1 / X1 Extreme Gen4

Signed-off-by: Jimmy Wang <jimmy221b@163.com>
Link: https://lore.kernel.org/r/20211105090528.39677-1-jimmy221b@163.com


Signed-off-by: Hans de Goede <hdegoede@redhat.com>