AP_Param: make configured() const

libraries/AP_Param/AP_Param.cpp

@@ -1070,7 +1070,7 @@ bool AP_Param::load(void)
     return true;
 }
 
-bool AP_Param::configured_in_storage(void)
+bool AP_Param::configured_in_storage(void) const
 {
     uint32_t group_element = 0;
     const struct GroupInfo *ginfo;
@@ -1100,7 +1100,7 @@ bool AP_Param::configured_in_storage(void)
     return scan(&phdr, &ofs) && (phdr.type == AP_PARAM_VECTOR3F || idx == 0);
 }
 
-bool AP_Param::configured_in_defaults_file(void)
+bool AP_Param::configured_in_defaults_file(void) const
 {
     uint32_t group_element = 0;
     const struct GroupInfo *ginfo;

libraries/AP_Param/AP_Param.h

@@ -350,13 +350,13 @@ public:
     static bool             check_var_info(void);
 
     // return true if the parameter is configured in the defaults file
-    bool configured_in_defaults_file(void);
+    bool configured_in_defaults_file(void) const;
 
     // return true if the parameter is configured in EEPROM/FRAM
-    bool configured_in_storage(void);
+    bool configured_in_storage(void) const;
 
     // return true if the parameter is configured
-    bool configured(void) { return configured_in_defaults_file() || configured_in_storage(); }
+    bool configured(void) const { return configured_in_defaults_file() || configured_in_storage(); }
 
     // count of parameters in tree
     static uint16_t count_parameters(void);