Change in coreboot[master]: add util/iotool: a simple tool to do inb/outb calls

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Change subject: add util/iotool: a simple tool to do inb/outb calls
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Patch Set 1: Verified+1

Build Successful

https://qa.coreboot.org/job/coreboot-checkpatch/15257/ : SUCCESS

https://qa.coreboot.org/job/coreboot-gerrit/60009/ : SUCCESS