huawei: enlarge the checking times for ndisstatqry in disconnecting

In sometimes, the disconnection of NDISDUP will spend more time than 10s.
So it is better to enlarge the checking times, such as up to 60 times.

plugins/huawei/mm-broadband-bearer-huawei.c

@@ -558,7 +558,7 @@ disconnect_3gpp_context_step (Disconnect3gppContext *ctx)
 
     case DISCONNECT_3GPP_CONTEXT_STEP_NDISSTATQRY:
         /* If too many retries (1s of wait between the retries), failed */
-        if (ctx->check_count > 10) {
+        if (ctx->check_count > 60) {
             /* Clear context */
             ctx->self->priv->disconnect_pending = NULL;
             g_simple_async_result_set_error (ctx->result,