habanalabs: add print upon clock change

Add print upon clock slow down due to power consumption or overheating.
In addition, add print when back to optimal clock.

Signed-off-by: Omer Shpigelman <oshpigelman@habana.ai>
Reviewed-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>