[coreboot] Board revision dependent settings in device tree/override tree?

[Paul Menzel]

Dear coreboot folks,

Change-set *mb/google/nissa/var/craaskov: Disable external fivr* [1] 
moves the settings for the external fully integrated voltage regulator 
(FIVR) out of device tree/override tree to only apply it to board 
revision with an external FIVR.

Is there a way to support conditions in device tree?

Kind regards,

Paul

[1]: https://review.coreboot.org/c/coreboot/+/81607