AP_Param_Helper: HAL_F4Light parameters divided into common and board specific

libraries/AP_Param_Helper/AP_Param_Helper.cpp

@@ -5,9 +5,13 @@
 #if defined(HAL_NEEDS_PARAM_HELPER)
 
 const AP_Param::GroupInfo AP_Param_Helper::var_info[] = {
+#if defined(F4LIGHT_HAL_VARINFO)
+    F4LIGHT_HAL_VARINFO
+#endif
+
 // only if board defines parameters
 #ifdef BOARD_HAL_VARINFO
-    BOARD_HAL_VARINFO,
+    BOARD_HAL_VARINFO
 #endif
     AP_GROUPEND
 };

libraries/AP_Param_Helper/AP_Param_Helper.h

@@ -16,7 +16,12 @@ public:
 
     static const AP_Param::GroupInfo var_info[];
 
-// only if defined
+// common HAL params
+#if defined(F4LIGHT_HAL_PARAMS)
+    F4LIGHT_HAL_PARAMS
+#endif
+    
+// per board params - only if defined
 #ifdef BOARD_HAL_PARAMS
     BOARD_HAL_PARAMS
 #endif