Suspend AVDTP link in remote initiated AVDTP Start

As media player is not started as part of remote initiated
AVDTP start, hence if link is kept in Started state when
remote initiated START is received it unncessarily blocks
power manager to trigger sniff on that link which increases
power number.
Related issue is seen with Moto HS820, Denso08.
These peer devices send AVDTP start on AVDTP connect and
does not suspend causing link not to go to sniff.
This change takes care of sending suspend in such scenarios
DUT initiated start gets triggered when local playback starts.
Moreover this change helps in suspending streaming if remote
initiates avdtp start during an ongoing call. This helps
remote and DUT's a2dp state to be in sync.

Bug: 22028876
Change-Id: I8ebee009c95148cf733e39d897bc8ffe5af7791e