[coreboot-gerrit] Change in coreboot[master]: build: build the open-power ffs tools

[Marty E. Plummer (Code Review)]

Marty E. Plummer has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/35008 )

Change subject: build: build the open-power ffs tools
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Patch Set 1:

Having some slight issue here. Currently you need to manually
do `make build/fpart` to get this to work as the ffs tools do
not get built otherwise. Unsure how to do that.