To learn more about the CNBC CFO Council, visit cnbccouncils.com/cfo It used to be that if your iPhone or Galaxy was damaged, you were at the mercy of Apple or Samsung to get it fixed as manufacturers snowed customers with a blizzard of unattainable proprietary parts and software diagnostics. But that pain hasn't been limited to smartphones, and a legal movement challenging who controls the diagnostic and reprogramming tools for anything from phones to automobiles, dishwashers and farm