Bluetooth: Changes to support AVRCP 1.5

Provide support for AVRCP1.5 so that remote controller
is able to browse the list of available media players
on DUT and select the media player from the available
list of players, from remote.

Change-Id: Ia1a340d1efaa16091e684f6ff7c738ce0accaee3
(cherry picked from commit 22af77236fccc546c6bec3956b0027fc1642ba1c)
(cherry picked from commit c9bc05d824197921a44d862026b3bc352d0f6a27)
(cherry picked from commit 3fad1502e08b9ccc7ecfd3f35be4b38190d9aa81)