Add more MLO link parameters

Framework populates MLO link information from scan cache. In roaming
use cases, framework may not have the scan result for the roamed AP.
So, always get the MLO link parameters from the supplicant. Add static
parameters apMldMacAddress, apLinkMacAddress and frequency of the
link. Dynamic parameters like RSSI, link speed..etc. are queried from
signal poll.

Bug: 268230307
Test: m android.hardware.wifi.supplicant-update-api
Change-Id: I7ffb23a8ead63a385cd00d26969529e2943fcff1