Add the qemumips64 to the kernel autobuilder
http://git.yoctoproject.org/cgit/cgit.cgi/yocto-autobuilder/commit/?id=8cd5383b92b69013ff16ee174d2c081d677c5d37
verified https://autobuilder.yoctoproject.org/main/builders/nightly-mips6 and https://autobuilder.yoctoproject.org/main/builders/nightly-arm64