Entity Framework 7 and BindingList

I'm trying to use EF7 with Winforms and I want to use BindingList to support two-way binding

In EF6, I could do it by calling .ToBindingList

_context = new ProductContext();
_context.Categories.Load(); 
this.categoryBindingSource.DataSource =
_context.Categories.Local.ToBindingList();

However in EF7, there is neither Local Property nor ToBindingList

How can I achieve two-way binding on Winforms with EF7?