test: add callout-test

Add test program which can create callouts based on an input device
path. It creates an error, with callouts, with name TestCallout.

Change-Id: I96b66b73ae4a9c00daff06222841a13747c07408
Signed-off-by: Deepak Kodihalli <dkodihal@in.ibm.com>
7 files changed