AP_AHRS: rename set_orientation to update_orientation

set_ should be reserved for setters

libraries/AP_AHRS/AP_AHRS.cpp

@@ -214,7 +214,7 @@ void AP_AHRS::add_trim(float roll_in_radians, float pitch_in_radians, bool save_
 }
 
 // Set the board mounting orientation, may be called while disarmed
-void AP_AHRS::set_orientation()
+void AP_AHRS::update_orientation()
 {
     const enum Rotation orientation = (enum Rotation)_board_orientation.get();
     if (orientation != ROTATION_CUSTOM) {

libraries/AP_AHRS/AP_AHRS.h

@@ -87,7 +87,7 @@ public:
 
     // init sets up INS board orientation
     virtual void init() {
-        set_orientation();
+        update_orientation();
     };
 
     // Accessors
@@ -145,7 +145,7 @@ public:
 
     void set_compass(Compass *compass) {
         _compass = compass;
-        set_orientation();
+        update_orientation();
     }
 
     const Compass* get_compass() const {
@@ -162,7 +162,7 @@ public:
 
     // allow for runtime change of orientation
     // this makes initial config easier
-    void set_orientation();
+    void update_orientation();
 
     void set_airspeed(AP_Airspeed *airspeed) {
         _airspeed = airspeed;