bluez5: show only codec profiles also for HFP/HSP
Don't show a "codecless" profile for HFP, similarly as we do for A2DP.
Simplify codec handling: for HFP/A2DP there's at most one transport for each profile, so no need to check it has right codec. There's also no need for "fallback profile", we always just emit nodes for the transport we find.
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check PW<->PW