If runqemu (or qemu itself) fails we need to know why, so tee out to a
log file and print it when we can't find the qemu process or determine
its IP address.
(From OE-Core rev: 3faa2d5bc993876f1f8b3ad806a0192efaa43e05)
Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>