* Update model_setup.cpp Adds R9M Flex (ACCST, non ACCESS) Power option GUI menu item, which is currently missing. * Update model_setup.cpp * R9M Flex power option menu for colorlcd Adds power selection menu for R9M Flex (ACCST, pre 2019) on colorlcd radios. Tested working on a tx16s. https://github.com/EdgeTX/edgetx/issues/1187 * Just test for FCC variants Co-authored-by: Peter Feerick <peter.feerick@gmail.com>