configure: uclinux is also linux
configure: uclinux is also linux

Signed-off-by: Gustavo Zacarias <beac5f8171fcde5e2ec734cc5d25d03e7362e8de@zacarias.com.ar>
Signed-off-by: Pablo Neira Ayuso <707d14912bb250caf67dfe0ea4035681fbfc4f56@netfilter.org>

greearb/libmnl-ct,threatstack/libmnl,greearb/libmnl-ct,chamaken/libmnl,threatstack/libmnl,chamaken/libmnl