Change in coreboot[master]: Use stopwatch_wait_until_expired where applicable

[build bot (Jenkins) (Code Review)]

build bot (Jenkins) has posted comments on this change. ( https://review.coreboot.org/21590 )

Change subject: Use stopwatch_wait_until_expired where applicable
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Patch Set 1: Verified+1

Build Successful

https://qa.coreboot.org/job/coreboot-gerrit/60685/ : SUCCESS

https://qa.coreboot.org/job/coreboot-checkpatch/15887/ : SUCCESS