If we get here in the code it's because runqemu has failed, this is not
a debug situation - we need to see the output, so print it as an error.
Fixes [YOCTO #13681].
(From OE-Core rev: c1def38c680d64c992839166bbf9bec51eb0788a)
Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>