Create a new Array variable from the data for the dojo select seems simplest ...
var restapidataObj = {
"data": [
{id:"1", name:"One1"},
{id:"2", name:"Two1"}
],
"total": 2,
"start": 0,
"sort": "name",
"order": "asc",
"size": 2
};
var dojoSelectArray = restapidataObj.data;
Now pass dojoSelectArray
to dojo