leave comment explaining why I don't override a functio

Author: paul-szczepanek-arm

features/FEATURE_BLE/ble/generic/FileSecurityDb.h

@@ -128,6 +128,9 @@ class FileSecurityDb : public SecurityDb {
             bool public_address
     );
 
+    /* I am not overriding set_local_sign_counter to avoid constant filesystem writes,
+     * instead this is synced by sync (which is called on disconnection) */
+
     /* saving and loading from nvm */
 
     virtual void restore();