iw: bump to 3.2

version 3.2 provides support for libnl 3.x, so remove the relevant patch

Signed-off-by: Yegor Yefremov <yegorslists@googlemail.com>
Acked-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>