Change in coreboot[master]: mb/google/deltaur: add deltaur mainboard initial support

[Tim Wawrzynczak (Code Review)]

Tim Wawrzynczak has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/39502 )

Change subject: mb/google/deltaur: add deltaur mainboard initial support
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Patch Set 14:
> Patch Set 14:
> > Patch Set 14:
> > > Patch Set 13:
> > >
> > > Hi Bora.
> > >
> > > Can we add support to read SKU ID from EC(get_board_sku) in mainboard.c ? This is required for mosys feature to work. Please refer to patch https://chrome-internal-review.googlesource.com/c/chromeos/third_party/coreb...
> >
> > I need to check how to get this for Wilco EC since we are not using chromeec. I think we need sku_info skus[] in drallion but I don't have this info right now. Lets push a separate patch.
>
> You can refer my previous patch :) For ST we can report fixed SKU ID, for Daltan I think only two sku, signed and unsigned. I will create an issue for discuss this.

Let's make that a separate patch.