Backed out an error in which the layout "chip_io_gpio_connects.mag",
which was used on caravel and caravan, was modified for openframe,
making it incompatible with caravel and caravan. Renamed it to
"chip_io_gpio_connects_vert.mag" which makes it unique to openframe
and also matches the nomenclature of "chip_io_gpio_connects_horiz".
Tim Edwards