GCS_MAVLink: move devo telemetry handling to GCS

libraries/GCS_MAVLink/GCS.h

@@ -23,6 +23,7 @@
 #include <AP_Common/AP_FWVersion.h>
 #include <AP_RTC/JitterCorrection.h>
 #include <AP_Common/Bitmask.h>
+#include <AP_Devo_Telem/AP_Devo_Telem.h>
 
 #define GCS_DEBUG_SEND_MESSAGE_TIMINGS 0
 
@@ -764,6 +765,9 @@ public:
     // frsky backend
     AP_Frsky_Telem frsky;
 
+    // Devo backend
+    AP_DEVO_Telem devo_telemetry;
+
     // install an alternative protocol handler
     bool install_alternative_protocol(mavlink_channel_t chan, GCS_MAVLINK::protocol_handler_fn_t handler);
 

libraries/GCS_MAVLink/GCS_Common.cpp

@@ -2017,6 +2017,8 @@ void GCS::setup_uarts(AP_SerialManager &serial_manager)
     }
 
     frsky.init();
+
+    devo_telemetry.init();
 }
 
 // report battery2 state