Floss: fix |A2dpCodecConfig| parameters

aosp/2855937 has changed the signature of the constructor, but by that
time Aptx was not built so the changes did not apply.

This CL fixes the signature to allow the build.

Bug: 314227872, 318629095
Test: m Bluetooth
Flag: EXEMPT floss only changes
Change-Id: I488a3778a94a3802ea4885c8e68bbd488d6b3c36