Fix build following bfc99943b04b46a6c1c885ce7bcc6f235b7422aa.

bfc99943b04b46a6c1c885ce7bcc6f235b7422aa removed ndis(4) support however
wpa as delivered by the wpa upstream (w1.fi) enables NDIS by default.
This commit disables NDIS suppport in the w1.fi delivered build config,
circumventing the build failure.