Bluetooth: HFP HF: SCO: Handle synchronous_conn_complete

Handle the synchronous connection complete event received from the
controller and update the event details received.

> HCI Event: Synchronous Connect Complete (0x2c) plen 17
        Status: Success (0x00)
        Handle: 266
        Address: 48:9D:24:1F:4D:1D (BlackBerry RTS)
        Link type: eSCO (0x02)
        Transmission interval: 0x06
        Retransmission window: 0x02
        RX packet length: 30
        TX packet length: 30
        Air mode: CVSD (0x02)

Change-Id: I4bcd0488f798b112af504245e80180a70b32a882
Signed-off-by: Sathish Narasimman <sathish.narasimman@intel.com>