runqemu-internal: provide more info if a preconfigured tap is used
We should provide the user more information if a preconfigured tap
is used. This is because the user might have manually set up the tap
interface to be used by other qemu binaries.
So at a minimum, we should let the user know how to make runqemu skip
that tap interface.
[YOCTO #5047]
Signed-off-by: Chen Qi <Qi.Chen@windriver.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
