tcp_adapter: use CASecureEndpoint_t

tcp_adapter: use CASecureEndpoint_t

The callback function for g_networkPacketCallback gets
CASecureEndpoint_t as first parameter and not CAEndpoint_t. The TCP
adapter always provided it with the wrong type CAEndpoint_t. This patch
makes the tcp adapter use CASecureEndpoint_t instead and fix this
problem.

Change-Id: Ic3b1ca0aadf7a95c846a31424932a7e90a86a55b
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Reviewed-on: https://gerrit.iotivity.org/gerrit/4821
Tested-by: jenkins-iotivity <jenkins-iotivity@opendaylight.org>
Reviewed-by: Jon A. Cruz <jonc@osg.samsung.com>