Implement HCI_Read_Failed_Contact_Counter mechanism

Also, read the Failed Contact Counter when flushing the A2DP Tx queue

Test: Streaming A2DP headset and trigger audio stutter
Bug: 64038257
Change-Id: I8ff72560e3840c5c22cfac9613c4be670b8a4cf1
(cherry picked from commit 6b4b6f56)