GAP: Return BTM_CMD_STARTED from btm_sec_l2cap_access_req

Return BTM_CMD_STARTED from btm_sec_l2cap_access_req when
remote device link is neither authenticated or encrypted so as
to send L2CAP Peer connect response with status auth pending.
This lets remote device extend the waiting time. This fixes IOT
issues with HP laptop EliteBook 8440p/8460p where pairing was
not possible.

Change-Id: I6cf6a72640de938a8145b541d4bad1bcba758ac5
1 file changed