kernel-lpae from Kernel:openSUSE-15.0:Submit project
Select Your Operating System
Add repository and install manually
For ports run the following as root:
zypper addrepo https://download.opensuse.org/repositories/Kernel:openSUSE-15.0:Submit/ports/Kernel:openSUSE-15.0:Submit.repo zypper refresh zypper install kernel-lpae