Issue #660 - Firmware part done. I need to check the ASM because when
compiled with the FRSKY_STICKS option enabled, the FW is lighter than
without the option!
Companion support - DON'T FORGET COMPILE SCRIPT!
Merge branch 'bsongis/Issue660' into next

Conflicts:
	companion/src/firmwares/opentx/opentxinterface.cpp