[coreboot-gerrit] Change in coreboot[master]: gpio: Change gpio_baseX_value() function return types to unsigned

[Arthur Heymans (Code Review)]

Arthur Heymans has posted comments on this change. ( https://review.coreboot.org/27809 )

Change subject: gpio: Change gpio_baseX_value() function return types to unsigned
......................................................................

Patch Set 1: Code-Review+2