floss: Disable ReadRSSI and ReadTxPower

Intel controllers don't handle ReadRSSI and ReadTxPower correctly but
instead sends back Hardware Error event which crashes Floss daemon.

Ideally Intel firmware should fix this but in the meantime we need to
avoid crash so this patch disables the HCI Read Failed Contact Counter
for Floss targets.

Bug: 258654152
Tag: #floss
Test: Build Floss on Chrome OS and Linux
Change-Id: I60dc89973d834add2034575d8215f3cf30e6a9fb