habanalabs: enable power info via HWMON framework

Add support to retrieve following power info via HWMON:
- instantaneous power value
- highest value since last reset
- reset the highest place holder

Signed-off-by: Rajaravi Krishna Katta <rkatta@habana.ai>
Reviewed-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>