File _multibuild of Package kernel-source
<multibuild> <package>dtb-aarch64</package> <package>dtb-armv7l</package> <package>kernel-default</package> </multibuild>
<multibuild> <package>dtb-aarch64</package> <package>dtb-armv7l</package> <package>kernel-default</package> </multibuild>