Switch AV link to Master if any other ACL (including LE connection) is up

The current code switches AV link to Master role if another
BR/EDR connection exists. This logic explicitly skips the LE link.
This is a legacy that did not fully take into consideration the LE link capabilities.
Include both BR/EDR and LE links to determine role requirements.

Change-Id: Id5feb3492551b95de8136cf91cea8fca9779fb8d
bugid: 190578912
Test: A2DP tests with mutiple HoGP and HID links