Issue #517 Heimdall set interface failure (errno 110) on 2 similar gallaxy y devices

This fixes the problem for my 2 devices that don't have additional alternates and don't respond correctly to the set request, and should be safe for devices with multiple alternate configs. I was not able to find examples of such devices from debug output in old issues, so it would be good to get back heimdall print-pit --verbose results from anyone that tries it with a device model.

galaxy y gt-s6102 duos heimdall print-pit --verbose example s6102verbosepit.txt