AVRCP: Launch player when selected and not running

When a carkit selects a player, start it if we don't have a session
running, instead of trying to start it's browsing service instead.

Test: select browsable player as active player from carkit
Change-Id: I50a5817daf9e9a666871f01c22ffbe7fedb15ec1
Bug: 37919422
1 file changed