Devicetree add-on

[Alexander Shiyan]

Hello All.

The question arose whether it is possible to load an add-on into
devicetree, but NOT through an overlay,
i.e. as a full-fledged dtb?
Ideally, it should look like this: the main ENTRY_FUNCTION() loads the
base tree, then,
after initialization in device_initcall(), the board modification is
determined and the full devicetree
written for this variant is loaded.

Thanks!