Plane: QTUN df messages angle boost field as float

ArduPlane/Log.cpp

@@ -501,7 +501,7 @@ static const struct LogStructure log_structure[] = {
     { LOG_STATUS_MSG, sizeof(log_Status),
       "STAT", "QBfBBBBBB",  "TimeUS,isFlying,isFlyProb,Armed,Safety,Crash,Still,Stage,Hit" },
     { LOG_QTUN_MSG, sizeof(QuadPlane::log_QControl_Tuning),
-      "QTUN", "Qhfffehh", "TimeUS,AngBst,ThrOut,DAlt,Alt,BarAlt,DCRt,CRt" },
+      "QTUN", "Qffffehh", "TimeUS,AngBst,ThrOut,DAlt,Alt,BarAlt,DCRt,CRt" },
 #if OPTFLOW == ENABLED
     { LOG_OPTFLOW_MSG, sizeof(log_Optflow),
       "OF",   "QBffff",   "TimeUS,Qual,flowX,flowY,bodyX,bodyY" },

ArduPlane/quadplane.h

@@ -60,7 +60,7 @@ public:
     struct PACKED log_QControl_Tuning {
         LOG_PACKET_HEADER;
         uint64_t time_us;
-        int16_t  angle_boost;
+        float    angle_boost;
         float    throttle_out;
         float    desired_alt;
         float    inav_alt;