hci: fix the assignment of connection ID for the master role

This assigns the connection ID for the master role when ACL connection
is up.

BUG=None
TEST=set up a L2CAP fixed channel connection and get the ACL up signal
with the expected connection ID

Change-Id: I99b07b79e4e8e034e2983569a9d4343b3049b539
1 file changed