MLK-16415 thermal: imx_sc: add device cooling for all thermal zones

For system controller thermal devices, add device
cooling for all thermal zones, when temperature
exceeds passive trip point, thermal driver will
send out notification, all devices that register
device cooling notification can take actions to
cooling down the chip, such as for GPU, below message
will be printed out:

[  581.284453] System is too hot. GPU3D will work at 1/64 clock.

And when temperature drops to below passive trip
point, GPU cooling action will be cancelled:

[  578.300532] Hot alarm is canceled. GPU3D clock will return to 64/64

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>

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