Change in coreboot[master]: soc/cavium: Clean uart code

[build bot (Jenkins) (Code Review)]

build bot (Jenkins) has posted comments on this change. ( https://review.coreboot.org/25448 )

Change subject: soc/cavium: Clean uart code
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Patch Set 6:

Build Failed

https://qa.coreboot.org/job/coreboot-gerrit/69462/ : FAILURE

https://qa.coreboot.org/job/coreboot-checkpatch/23781/ : SUCCESS