Install the "kernel-source" and "kernel-syms" packages.
sudo zypper install kernel-source kernel-syms
"zypper info -t pattern devel_kernel" shows these packages:
Code:
S | Name | Type | Dependency
--+--------------------------------+---------+-----------
i | patchutils | package |
i | quilt | package |
i | gitk | package |
| kernel-docs | package |
i | cscope | package |
i | kernel-syms | package |
i | kernel-source | package |
i | diffstat | package |
i | patterns-openSUSE-devel_kernel | package |
i | indent | package |
i | git-core | package |
i | git-email | package |
| kernel-debug | package |
You probably don't need the packages with git in their name, and the quilt package, as you aren't a kernel developer submitting patches. You may need the linux-kernel-headers package as well.