NimBLE NVS: Fix bug in deletion of peer_dev_record

- Fix comparison metric while deleting peer_dev_record. Previous to this,
  random address change after reboot used to result in NVS database mismatch
  and hence sometimes caused wrong NVS entry deletion.
- Closes ESPCS-540

nimble/host/src/ble_hs_resolv.c

@@ -96,7 +96,7 @@ ble_rpa_remove_peer_dev_rec(struct ble_hs_dev_records *p_dev_rec)
     ble_store_num_peer_dev_rec--;
     if ((i != ble_store_num_peer_dev_rec) && (ble_store_num_peer_dev_rec != 0)) {
         memmove(&peer_dev_rec[i], &peer_dev_rec[i + 1],
-                (ble_store_num_peer_dev_rec - i + 1) * sizeof(struct ble_hs_dev_records ));
+                (ble_store_num_peer_dev_rec - i) * sizeof(struct ble_hs_dev_records ));
     }
 
     BLE_HS_LOG(DEBUG, " RPA: removed device at index = %d, no. of peer records"

nimble/host/store/config/src/ble_store_nvs.c

@@ -212,8 +212,10 @@ get_nvs_db_attribute(int obj_type, bool empty, void *value, int num_value)
             if (value) {
 #if MYNEWT_VAL(BLE_HOST_BASED_PRIVACY)
                 if (obj_type == BLE_STORE_OBJ_TYPE_PEER_DEV_REC) {
-                    err = get_nvs_matching_index(&p_dev_rec, value, num_value,
-                                                 sizeof(struct ble_hs_dev_records));
+                    err = get_nvs_matching_index(&p_dev_rec.peer_sec,
+                                                 &((struct ble_hs_dev_records *)value)->peer_sec,
+                                                 num_value,
+                                                 sizeof(struct ble_hs_peer_sec));
                 } else
 #endif
                 {