tizen: Declare used licenses using SPDX convention

tizen: Declare used licenses using SPDX convention

Change-Id: I6f016165739f57e33fd950f07f1d379b6fa3da69
Signed-off-by: Philippe Coval <philippe.coval@osg.samsung.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/13523
Tested-by: jenkins-iotivity <jenkins-iotivity@opendaylight.org>
Reviewed-by: Mats Wichmann <mats@osg.samsung.com>
(cherry picked from commit 9f9489062b780aa77f44c0b2d8fd4e4bb4d59d02)
Reviewed-on: https://gerrit.iotivity.org/gerrit/13561
Reviewed-by: Ziran Sun <ziran.sun@samsung.com>