Increase LLCP data-link connection timeout to 2000 ms.

Some older PN544-based solutions would only send the first SYMM back
(as an initiator) after the full LTO (750ms). But our connect timer
starts immediately, and hence we may timeout if the timer is set to
1000 ms. Worse, that causes us to immediately connect to the NPP
socket, causing concurrency issues in the NXP stack. Increase the default
timeout to 2000 ms, giving us enough time to complete the first connect.

Change-Id: I1e45ebd2f97dc6bb362e2bfea3a42445f69ad59d