[mbed-tls] PSA Key derivation driver entry points

Hi All,

The PSA driver interface guide describes the driver entry points for key derivation. However the implementation seems to be missing from the psa crypto core layer.

Can you help update if this is something which is being worked on ? I see a lot of tickets open related for key derivation interface dating back in 2022. Are these still relevant ?

Regards, Ruchika