Bugfix: bitforce_queue: Initialize proc->device_data to board data for parallelized chip processors

driver-bitforce.c

@@ -1279,6 +1279,7 @@ static bool bitforce_thread_init(struct thr_info *thr)
 			*procdata = *first_on_this_board;
 			procdata->handles_board = false;
 			procdata->cgpu = bitforce;
+			bitforce->device_data = data;
 		}
 		applog(LOG_DEBUG, "%s: Board %d: %"PRIpreprv"-%"PRIpreprv, bitforce->dev_repr, boardno, first_on_this_board->cgpu->proc_repr, bitforce->proc_repr);