Bluetooth: Fix L2CAP connection establishment

In hci_conn_security ( which is used during L2CAP connection
establishment ) test for HCI_CONN_ENCRYPT_PEND state also
sets this state, which is bogus and leads to connection time-out
on L2CAP sockets in certain situations (especially when
using non-ssp devices )

Change-Id: I4b962ef332c03485912f9e8e7b501d86b375daca
Signed-off-by: Ilia Kolomisnky <iliak@ti.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
[mathewm@codeaurora.org: Resolved conflict]
CRs-fixed: 343392
Signed-off-by: Mat Martineau <mathewm@codeaurora.org>