3djc/telem rename (#3678)

* Rename EXT option to TELEMETRY

* Change test accordingly

* Rename FRSKY to TELEMETRY_FRSKY

* Rename ARDUPILOT to TELEMETRY_ARDUPILOT

* More renames (JETI, MAVLINK, NMEA)

* Fixes to make commit-test happy

* Further tests added to commit-test

* Cleanup

* Rename EXTSTD to TELEMETRY_NONE

radio/src/switches.cpp

@@ -385,7 +385,7 @@ bool getLogicalSwitch(uint8_t idx)
     }
     else {
       mixsrc_t v1 = ls->v1;
-#if defined(FRSKY)
+#if defined(TELEMETRY_FRSKY)
       // Telemetry
       if (v1 >= MIXSRC_FIRST_TELEM) {
 #if defined(CPUARM)
@@ -485,7 +485,7 @@ bool getLogicalSwitch(uint8_t idx)
     }
   }
 
-#if defined(FRSKY)
+#if defined(TELEMETRY_FRSKY)
 DurationAndDelayProcessing:
 #endif