[coreboot-gerrit] Change in coreboot[master]: util/inteltool: Print error messages directly to stderr

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Change subject: util/inteltool: Print error messages directly to stderr
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Patch Set 1: Verified+1

Build Successful

https://qa.coreboot.org/job/coreboot-gerrit/58603/ : SUCCESS

https://qa.coreboot.org/job/coreboot-checkpatch/13993/ : SUCCESS