fix for "genirq: Flags mismatch irq 0. 00000080 (virtio3) vs. 00014a00 (timer)"
Caused by running out of IRQ's for probe-qemu! WTF, this the 1990's or something?

Replaced eth0 with pcnet (rather than virtio) which shares its
interupt; and used buildroot/board/qemu/mips-malta/linux-3.12.config
as a linux configuration base
reinstate S50runsv.sh for probe
monitorProbe script is source'able
add missing .depend.boot tweaks to fakesite