/usr/src/linux-source-3.13.0/debian.master/etc/kernelconfig is in linux-source-3.13.0 3.13.0-139.188.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 | if [ "$variant" = "ports" ]; then
archs=""
family='ports'
else
archs="amd64 i386 armhf arm64 ppc64el powerpc"
family='ubuntu'
fi
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