qemurunner: print tail qemu log in case bootlog is empty
There are cases where the 'while loop' waiting for login prompt fails
and the bootlog variable does not get populated, thus use the the new
qemurunner member (self.msg) which stores all output coming from the qemu
process.
[YOCTO #12113]
(From OE-Core rev:
39ffa0f3779305c5e8ef86fe4572e961c5912021)
Signed-off-by: Leonardo Sandoval <leonardo.sandoval.gonzalez@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Signed-off-by: Armin Kuster <akuster808@gmail.com>
