kernel-source from home:vanderraad:frdm-tumbleweed project

For ARM Kernel run the following as root:

zypper addrepo https://download.opensuse.org/repositories/home:vanderraad:frdm-tumbleweed/ARM_Kernel/home:vanderraad:frdm-tumbleweed.repo
zypper refresh
zypper install kernel-source