[coreboot-gerrit] Change in coreboot[master]: coreboot-sdk: Build Clang first in a separate step

[Martin Roth (Code Review)]

Martin Roth has posted comments on this change. ( https://review.coreboot.org/29455 )

Change subject: coreboot-sdk: Build Clang first in a separate step
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Patch Set 1: Code-Review+2

Good call, that makes a lot of sense.