fix(ghost): use a usable baudrate for the telemetry mirror (#7610)

radio/src/serial.cpp

@@ -46,6 +46,10 @@
   #include "telemetry/crossfire.h"
 #endif
 
+#if defined(GHOST)
+  #include "telemetry/ghost.h"
+#endif
+
 #if defined(DEBUG_SEGGER_RTT)
   #include "thirdparty/Segger/SEGGER/SEGGER_RTT.h"
 #endif
@@ -300,6 +304,12 @@ static void serialSetupPort(int mode, etx_serial_init& params)
       params.baudrate = CROSSFIRE_TELEM_MIRROR_BAUDRATE;
       break;
     }
+#endif
+#if defined(GHOST)
+    if (isModuleGhost(EXTERNAL_MODULE) || isModuleGhost(INTERNAL_MODULE)) {
+      params.baudrate = GHOST_TELEM_MIRROR_BAUDRATE;
+      break;
+    }
 #endif
     params.baudrate = FRSKY_TELEM_MIRROR_BAUDRATE;
     break;

radio/src/telemetry/ghost.h

@@ -119,6 +119,7 @@ enum GhostTelemetryBaudrates
 };
 #endif
 #define GHOST_BAUDRATE       400000
+#define GHOST_TELEM_MIRROR_BAUDRATE  115200
 #define GHOST_PERIOD         4000 /* us */
 
 enum GhostLineFlags