AVRCP: Disallow MBS Connect to players during BT On

Simultaneous MBS connections to all players leading
to binder connect & player launch leading to player
start-up launch resulting cost memory hence system 
performance. Now for creating the list of Browsable
players rely on browse white-list.

CRs-Fixed: 2597375
Change-Id: I5e5921f68b676d5e2233bf5474d248a6488c90ac
1 file changed