Prior TBS Smart Audio does not work with Real Pit connected

[BikeGuy1992]

Found a bug. Former TBS SA protocal does not work when a Real Pit is wired in and turned on using a KISS AIO CC. I do not have any SA2.1 capable VTX units to compare to to verify if there is an issue on the newer SA protocal when using a Real Pit in conjunction.

Current VTX is the TBS Unify Pro HV Race 7 pin and non race versions (audio and smart audio are two separate lines) using the former protocal.

https://www.getfpv.com/tbs-unify-pro-hv-5g8-race-sma.html?utm_source=google&utm_medium=cpc&adpos=1o2&scid=scplp6474&sc_intid=6474&gclid=Cj0KCQjwsvrpBRCsARIsAKBR_0Leo_DqL7wMEgCqXoCB3b5pSz6ubKCRbqv6oGaTXgYU8NXfjqxHvQYaAmKrEALw_wcB