For openSUSE Tumbleweed run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:mnhauke/openSUSE_Tumbleweed/home:mnhauke.repo
zypper refresh
zypper install coreboot-utils
For 16.0 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:mnhauke/16.0/home:mnhauke.repo
zypper refresh
zypper install coreboot-utils
For 15.6 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:mnhauke/15.6/home:mnhauke.repo
zypper refresh
zypper install coreboot-utils