Pounder power detector temperature readout

[jordens]

• pounder temperature measurement using the power detectors (Temperature measurement with power detector sinara-hw/Pounder#94)
• use for pounder presence detection instead of pgood
• read and telemetrize CPU temperature as well (Temperature sensor support #575)
• provide API for temperature readout (rj/pounder v1.2 #837)

[jordens]

Working fine in FLS.