For openSUSE Tumbleweed run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:BdMdesigN:kernel/openSUSE_Tumbleweed/home:BdMdesigN:kernel.repo
zypper refresh
zypper install kernel-firmware-iwlwifi
For openSUSE Slowroll run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:BdMdesigN:kernel/openSUSE_Slowroll/home:BdMdesigN:kernel.repo
zypper refresh
zypper install kernel-firmware-iwlwifi
For 15.6 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:BdMdesigN:kernel/15.6/home:BdMdesigN:kernel.repo
zypper refresh
zypper install kernel-firmware-iwlwifi