When falling back from detecting ip from /proc/./cmdline the
output of runqemu is acutally
'Network configuration: ip=192.168.7.2::192.168.7.1::255.255.255.0'
which doesn't match the given regex and leading to run failure, although
IP is detectable.
Fix regex by inserting an optional 'ip=' prefix to first IP
Signed-off-by: Konrad Weihmann <kweihmann@outlook.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
