We ensure disable mac80211 mesh by relabelling it

We ensure disable mac80211 mesh by relabelling it

Mesh is currently busted.

If your kernel has an option enabled we cannot
simply disable it for two reasons:

* kconfig magic
* autoconf

We cannot disable CONFIG_MAC80211_MESH by
using undef on linux/compat_autoconf.h,
and even if it goes after linux/autoconf.h.

Even if you solve that you still need a way
to unset it from the kconfig somehow.

Mesh is currently busted and disabled so even
if your kernel *does* enable it we want to disable
it for you. We do this by relabelling the mesh
kconfig option.

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>