callouts: add example output YAML

YAML is of the form:
<sysfs device path>: <inventory path to be called out>

This will help generate code to map device paths to inventory objects.

Change-Id: I5613e766d0c6b39d9b2c4a6146a747ab321555cb
Signed-off-by: Deepak Kodihalli <dkodihal@in.ibm.com>
diff --git a/callouts/callouts-example.yaml b/callouts/callouts-example.yaml
new file mode 100644
index 0000000..ba432fd
--- /dev/null
+++ b/callouts/callouts-example.yaml
@@ -0,0 +1 @@
+/sys/devices/some/device: /system/chassis/matched/item