bluetooth: Add support for LE conn param

Added support to let the userspace know about the updated
LE connection parameters. On receiving successful connection
complete and connection parameters update event from the BT
Controller, send a mgmt event to the userspace bluetoothd.

CRs-fixed: 380271
Change-Id: If8c3d785188e0d4f38c7431d01c016f399137408
Signed-off-by: Sunny Kapdi <sunnyk@codeaurora.org>
5 files changed