Add device and platform information in sample codes.

Add device and platform information in sample codes.

Bug: https://jira.iotivity.org/browse/IOT-1384
Change-Id: I8f8e69716534dddb77d6069394267e730a02c14f
Signed-off-by: Ziran Sun <ziran.sun@samsung.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/12909
Tested-by: jenkins-iotivity <jenkins-iotivity@opendaylight.org>
Reviewed-by: Alex Kelley <alexke@microsoft.com>
Reviewed-by: Dave Thaler <dthaler@microsoft.com>
(cherry picked from commit 727e1ba3cbd4d8fd9fbfa30d1f25529f7c24ee31)
Reviewed-on: https://gerrit.iotivity.org/gerrit/13143