Link static jsmn library private
Link static jsmn library private

The static jsmn library must be linked private in order prevent
exporting it.

Change-Id: I5e7275c852c0e65b9415c7c839dd472187a4bbf6

bmwcarit/joynr,bmwcarit/joynr,bmwcarit/joynr,clive-jevons/joynr,bmwcarit/joynr,clive-jevons/joynr,bmwcarit/joynr,bmwcarit/joynr,clive-jevons/joynr,bmwcarit/joynr,clive-jevons/joynr,clive-jevons/joynr,bmwcarit/joynr,clive-jevons/joynr,bmwcarit/joynr