The iPhone is getting free access at any ATT hotspot.  Others are getting it because ATT goofed.Now that AT&T has full control of wireless hotspots like Starbucks and Barnes and Nobles, it looks like they’re doling out freebies to their favorite customers: iPhone users. Apparently, if you’ve got one of Apple’s devices, you can hop on the WiFi networks for exactly zero dollars provided you enter your phone number at a login screen. Great for iPhone owners, but a raw deal for everyone else, right? Not