Other linux-yocto recipes have the virtio fragment added to qemu* targets.
If you plan on booting a kernel with qemu, we need these options .. or
things like the virtual disk won't be present.
(From OE-Core rev: 7e30a0db7b587a72a50d6d981ba8cf275ca61b23)
Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>