* 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>
